I'd be thrilled if there were some restaurants that passed a much lower bar than that. I don't agree about expensive ingredients. Lots of restaurants (not all!) have figured out how to serve non-spoiled vegetables. When I lived in Singapore I lived near (and patronized regularly) a bunch of Indian restaurants that did that without refrigeration (at 1° N latitude).

The labor costs are an issue. I cooked a curry with garden vegetables and Gulf shrimp over the weekend, and it took over an hour (perhaps it would have been unpalatable to a real Indian person, but three hillbillies from the Ozarks liked it just fine). However, it's possible to purchase e.g. frozen okra that's already sorted and chopped.

But yeah restaurants are difficult. Way too much competition in that space unless you really like running a restaurant. Chinese-Americans seem to have had some success, however.