yes nothing is free anymore - everybody will try to rip you off instead (including the state if not mostly the state)
Everybody will try?
Not so. In fact, I've often observed the opposite, especially with smaller businesses.
perhaps that's why bigger crooks (among them the country officials) are roaming here freely too -don't you think
Perhaps if people learnt that telling the authorities doesn't mean you're collaborating with the enemy, we might get somewhere.
Right now, this curse of "omg, cannot possibly tell anyone who can do something about it, it's WRONG" causes so much trouble here.
could you perhaps imagine Polish food chains selling mostly Polish stuff
Uh, there's several Polish chains - I don't know the proper name, but there's the "pierogarnia" chain of restaurants for a start. The Brovaria chain (known as different names in different cities, but with the same concept) is another one.
As for the "energy of the best of the nation" - I don't know about you, but I had several excellent dinners over the weekend in Polish owned restaurants. You can commonly find "the best of the nation" right there.
Incidentally, as far as I'm aware, the "American chains" are actually Polish owned and operated.