Even if all of them go bust this year, there will be new ones once population return and will need entertainment. The nature of entertainment might change a bit, but it will be still there.
I think there's an implicit assumption here that there will be a definite end date to this. I really hope there is, but there's another possibility that looks more likely as time goes on: lockdown has permanently broken the brains of some types of political leader and they will in fact never fully release the restrictions. Places like SF and NY will have long term restrictions lasting years, justified in the name of public health, the "new normal" and epidemic curves that never flatten (given current testing levels the curve can never drop to zero just due to FPs alone).
Many parts of the US will definitely go back to normal, but maybe not everywhere. It may be a permanent structural change in laws and government approaches.
When things fully reopen there’s gonna be a sort of boom in entertainment/restaurant/travel industry