I agree with everything that has been written thus far, except that from the OP.
OK, so its going to be a bit of a hassle to file a flight plan, and hope the time slot is acceptable. Sure, if you want to do some aerial photography and circle round a ground object numerous time, its going to a little more difficult in this period, or one needs to be extremely inventive on the routing section of their flight plan. Yes, PPL flight training will be more restrictive. I fly from an airfiled in the restricted zone, but I see it as a challenge to rise to, to fit in with the restrictions and stick to a route and times.
I cant comment on why 20 businesses may close forever, or speculate who the '1000 people in the business' will be affected but people might have contingency plans or alternates. A lot of notice and dialogue opportunities were given.