UDS, you aren’t being particularly helpful, which is to say you aren’t being helpful at all.
We don’t really care about getting strawberry juice directly. We care about why it’s difficult to get strawberry juice pre-made, and why it’s so damned expensive when we can find the stuff.
Any monkey knows how to juice a strawberry, and, apparently, so do you. Good job. Just take that commentary someplace else.
Roland, I think it’s most directly related to a lack of demand. Very few people grew up drinking strawberry juice like they grew up with orange juice or apple juice, for example, and so few people would even think of looking for it.
But why is there no demand? Possibly because juice machines (at the industrial scale) don’t like working with pulpy food that reduces to slush. But oranges are pulpy and reduce to slush, and we can effectively make pulp-free orange juice (for heathen bastards ;)).
And this doesn’t tell us why strawberry juice is a common mixture in juice cocktails, or why strawberry wine is so popular, and yet we still have a time finding pure strawberry juice.
Maybe it’s related to how sweet strawberry juice is. Apples and oranges and even grapes probably have a lower sugar content than strawberries, and making a syrupy juice would go against the national palate. Or what the companies think the national palate is, which is the same thing. This sweetness would explain its presence in cocktails, since it would be an easy way to naturally sweeten otherwise tart or ascerbic drinks.
So, the real reason? I’m guessing it’s why we eat (and don’t eat) a lot of things: historical accident ossified by the market economy. We are good at making things we know we want. (Too good, perhaps, to judge from reports on obesity.) We aren’t so good at making things we don’t know we want, because it requires an initial outlay that only a few companies can afford. And if those companies don’t see a good reason to invest in something, it won’t get done on a large enough scale to make it economically worthwhile.