I think the travel industries (hotels, airlines, car rentals, etc) will permanently be affected. I see restaurants bouncing back but it will be months if not a year or more to get back close the previous levels. And that assumes the virus is gone, not just down to lower levels. If there are ANY new levels of infections, don't expect people to crowd together in restaurants.
Also, I see a plummet in the cost of office space since many employers will realize that they can function just as well with a lot of the back-office people working from home. Why have a large building with offices and cubicle space that you are paying a fixed monthly amount for even when people are not even working (vacations, weekends, etc.). Invest in a smaller, higher class location if visibility is a requirement and still save a lot of money.
The upside would be IT and Audio-Visual specialists. If a person has some experience in those areas, I bet you will have more work than you could handle in the upcoming years in setting up conference rooms and offices with cameras, microphones, software, electronic whiteboards and other peripheral equipment to make the stay-at-home experience as close as possible to being in the office. And then another revenue stream in training the personnel who will be using it (or service contracts to provide on-going support).
I'm thinking about this myself the more I am thinking about it.
Rub a Dub