Restaurants and bars require very little capital to open (the low barrier to entry explains why margins are so low in the industry). Even if many of the existing restaurants go out of business, new ones will quickly open up once the pandemic is over and people start going out again (which might take a little while, to be fair).

They'll all be replaced. Theaters, for example, will rebound because they're still sitting there, even if they need a new owner. The demand for food, drinks, and entertainment will still exist, even if it's reduced somewhat, and the costs of opening a business and low competition will make for some very tempting business opportunities for entrepreneurs.

These are also the same cultural amenities that make a rural area desirable (what's really left after you've listed everything). These businesses are far more likely to come back in cities with different investors, they may never open up again in rural areas.

Sure, but that's likely only temporary. And if it's not, then we probably have much worse things to worry about than which cities are hip.