My personal experience is that you don’t generally wind up with only one chain pizza place. If there’s enough interest for one, there’s usually enough interest for competition.
The exception would be if the town/city is small and there’s only a few restaurants. But then it wouldn’t be “the only pizza place that delivers” but “the only pizza place.”
You’ve now got me wondering how common it is for a municipality to have more than one pizza place, but only one that actually delivers.
I don’t have a problem with eating square pizza, but, if it’s handheld pizza, I do prefer having some crust on it. It’s annoying trying to hold it from the bottom, making the inner pieces less desirable to me. I’ll eat them, but I’d rather take a piece with some edge crust.
Eating it on a plate, then it doesn’t really matter. But the I tend to like the crust to not be too thin.
It’s not like they all move in at once. Someone’s got to be the first pizza delivery place in a given market.
I work in a small city that has pretty much all of the major national chain restaurants. However, the suburb across the river I live in has only recently started getting a lot of chain restaurant. When I moved in, the only chain pizzeria was Pizza Hut, and they didn’t deliver (or at least not to the part of town where I lived). There were a couple of local pizzerias, and they didn’t deliver, either. Then Domino’s moved in shortly after I did, so I could order pizza. The a couple of years later, so did Papa John’s. And that was it. The only places that delivered to my area, at all. No other pizzerias, no Chinese food places, nothing. For a decade. It was only last year that GrubHub and DoorDash started deliveries in my area. I can now order from most of the restaurants in my town, including the independent pizzerias that don’t have their own delivery service, but it’s expensive.
It just seems odd to me that it would seem odd to anyone else that a newly opened Domino’s might be the only pizza place that delivered to someone’s house. Not everywhere has a Starbuck’s.
I live in rural New Hampshire, in a town of about 8,000. We have two local pizza places that don’t deliver, plus the new Dominos that does deliver. We don’t have any Uber or Lyft drivers. The only other chain restaurant in town is McDonalds.
Tomato is a fruit 
Comes from when Pizza was pretty new in the US, so folks called it Tomato Pie and then it evolved into Pizza Pie.
Its normal with a thin crust pizza in Minnesota as well. When my youngest’s New York/Massachusetts friends visited us we got that thin crust extra cheesed greasy square cut pizza you find around here - and they’d never seen anything like it. (It sounds gross, but it is my favorite pizza - my husband likes a thick doughy crust.). Yes, you want to have a napkin or paper towel to wipe off greasy fingers.
Anyone here familiar with New Kensington and Arnold Pennsylvania might be familiar with P&M Pizza, a little pizza place that is known for their extremely thin crust pizzas and their homemade sauce. Square cut, because otherwise it wouldn’t work.
But, but . . why wouldn’t it work otherwise?
Their crust is so flimsy(?) that if cut in wedges and picked up like a “normal” slice it would fail. Anything other than small squares would be difficult to lift.
Additionally, P&M is a small family owned place and they’re likely to show you the door if you argue with the way they do things.
I love the crust. But I have lost nearly 85 lbs. I would rather have the thin crust pizza than no pizza at all. And I’ve kind of grown to like it. Pepperoni and pineapple is my 'za of choice.
Having lived in Reading, Penna. for a couple years right around 1970, I’ve heard some of the oldsters then refer to “pizza pie,” so the phrase got that far west.
FWIW, In the the NYC suburbs and exurbs from the late 60s through the 80s “pie” was commonly used as shorthand for pizza, progressively more so as the age of the person age. It’s not that the term “pizza” wasn’t used, I guess it was like a quick code to be used when speaking of getting one or ordering one. Relatives, friends, neighbors. The term was ubiquitous.
( Heard scores of times in pizzerias by me ) “Ah…I’ll take a large cheese pie…”
Entering my house after gallivanting with friends, to see my step-father watching TV with a pizza box on the coffee table ( arrived home late from work ) and he motioned to me and pointed at it, offering me some: “Pie?”
I worked at a gas station/repair garage run by 3 brothers of Italian descent, and sometimes on friday nights at closing, they’d get some pizza. They always called it “Hot pie”, but they said it like it one word; “hotpie”.
The term “pizza pie” always reminds me of The Flintstones.
Yea, I read the OP as meaning the area was served by several local pizza places before Dominos and none delivered which would be odd. However, on reread, it could be that Dominos is the second pizza place around and the first one to offer delivery.
I still contend that squares are superior.
My absolute favorite pizza is the one in front of me.
Tomato pie is a style started in Trenton in the early 20th century. It is still popular in the area. It differs from the New York or New Haven style because the toppings are put directly on the crust and the tomato sauce is poured on top to cover it. You get a different mouth feel and a much stronger tomato taste. *
I grew up and still live in an area that uses the term pie for pizza. It’s much more often used as a unit of measure rather than a descriptor. You don’t hear “Do you want pie for dinner?” You hear “Do you want pizza? I think two pies will be enough.”
*For context, Lombardi’s in NYC is considered the first pizzeria in the US. It opened in 1905. Papa’s Tomato Pies opened in Trenton in 1912. Frank Pepe’s opened in New Haven in 1925. All three are still open. The term tomato pie is still used at places that make Trenton style.
Until I moved to the Midwest, all thin crust pizzas I’ve ordered were still cut into slices. My mom always gets Dominos thin crust on the East Coast and it’s in slices and actually has crust, unless they changed it recently. Like I posted in the 'types of pizza" topic, it seems like people here are obsessed with cracker pepperoni pizza and god forbid pizza have crust on the edges or taste like dough.