I have, many times:
Post office? Sure, even recently. My postal carrier is a gem, as are the people at my nearby office. Nicer by far than the local UPS, for sure.
Unemployment insurance? Definitely! Met some great folks there, actually. A couple people made my life a LOT easier when I was unemployed. Calling them life-savers would not be a stretch.
Universities? I went to two state universities, and had outstanding professors and ran into lots of great staff people, too. To be fair, the private university was great, too, but certainly not better.
National Parks? Park service employees in my experience have been terrific.
Military? I’ve got no complaints. Our volunteer, tax-support military is the most powerful that has ever existed on the planet, and they do a pretty good job staying away from tampering with our democratically-elected government.
IRS? Well, they do what they’re supposed to do. When I’ve I had questions, I was treated politely and promptly.
And as an employee at a major, state-funded university, I assure you I try very hard to provide great service and there are serious, direct consequences if I do not.
But really, if you think profit makes something efficient, you clearly have never worked. Are you going to try to get me to believe that every employee at a business–even a small one–was a model of service? Always kept the bottom line of the company in mind? Never wasted time? Never wasted resources? Was always clearly qualified for the job they were doing?
I’ve worked in big government agencies, and small ones. I’ve worked in big businesses, and small ones. I’ve worked in big non-for-profits, and small ones. Whether the organization has been principally about making money or not has never been observed by me to make the least difference in terms of:
[ul]
[li]whether the employees were necessarily good at the what they did (actually, gov’t and non-profit did better at this in my experience)[/li][li]whether the employees wasted time and resources or not (again, actually if anything this was a little worse at big companies)[/li][li]whether there was good communication between hierarchies[/li][li]whether employees provided good service to customers.[/li][/ul]
The only thing I can say from my experience that makes an clear, obvious difference is size, and whether my boss was a tool (admittedly, the worst tool of a boss I ever had was at a non-profit.)