We could make up lots of good reasons for not moving though. My parents are sick and I need to be near them. My wife / girlfriend / boyfriend / life partner has a job / sick parents / other commitments where I am. The US won't let me into the country for any number of completely idiotic reasons even though I'm not a criminal (visas are hard). I have a personal objection to the TSA. The point is that for a lot of people moving very very far is legitimately either not an option, or not a very good one.
(the humorous half-truth stands though, at least the store bought stuff I've had when I've been over there. Bread should not taste like sugar...)
"Real" bread does exist in the US, though usually only in wealthy communities, and even in those places is considered relatively boutique. Middle America's definition of bread would shock anyone coming from a bread-heavy culture.
I grew up on various derivations of Wonder Bread on the West Coast, FWIW.
I've lived in a bunch of different places, and invariably good bread was only to be found in relatively wealthy areas. I suspect though, sanity in baking returns once you get rural enough.
The bread gets better because when all you can afford is the materials to make bread and your time is cheap, it becomes worthwhile to optimize that process. (Sie poor)
If you don't have the surplus value to allocate to making bread, but your time is still too "valuable" to allocate towards making better bread, you eat crap bread. (Middle America)
If you have surplus value to slosh around, then fuck it. (Rich peeps)
I don't live in the U.S. but every time I visit, I'm actually rather amazed by the wide variety of bread (and beer) even in average grocery stores, some of which looks really nice.
That's not true everywhere of course, but I suspect it's not unusual in the sort of place you're likely to find any concentration of tech companies.
The days when a loaf of wonderbread and a delicious canned meal were considered the height of sophistication are, I think, mostly behind us... :]