4) Yes. So much depends on timing, availability, and effectiveness of vaccines.
1-3) All of the others have some amount of pent-up demand, and some long-term lingering fear/habit effects. And how those interact will mostly depend on 4. I suspect very-long-term effects (10+ years) will mostly be some trends that accelerated during the virus-fear times, rather than actual directional changes from the virus.
4) Yes. So much depends on timing, availability, and effectiveness of vaccines.
1-3) All of the others have some amount of pent-up demand, and some long-term lingering fear/habit effects. And how those interact will mostly depend on 4. I suspect very-long-term effects (10+ years) will mostly be some trends that accelerated during the virus-fear times, rather than actual directional changes from the virus.