Depends on the
stage and the types of events. Stages in rental houses are more likely to be used for all kinds of things where the
stage floor is either clearly visible or needs to be a smooth surface. They also have such a high turnover of events that if they allowed everyone to screw into their floor, they'd be replacing their floor much more frequently no matter how well you think you can
plug the hole up afterward. In this application, most shows coming into the theater are there for a day or two, or a week max.
Conversely, a repertory theater may
stage a dozen shows a year, they may own their
stage or be a substantial stakeholder in the
venue, and have an understanding that they'll be painting the floor or bolting into it, and then leaving the set in place for a 6-week run.
The other factor here is budget. Is the
venue making enough dough off of the productions to pay for replacing the
stage floor more frequently ( --- again, only so many times you can
plug the floor before it's Swiss cheese). A
venue with no maintenance budget may be wise to do everything in their
power to keep their facility in tip-top shape and take as few risks as possible.
Also important to consider from the
venue's perspective that while everyone may be well-intentioned, good intentions don't pay for the
venue employing stagehands after the show loads out to get the holes plugged. I see this most often with people who want to paint a
stage floor. They're happy to paint it black afterward but lack of time, opportunity, or whatever and suddenly someone is stuck at the
venue until 4am painting the floor black again because the production didn't keep their end of the bargain and the
stage needs to be ready for a symphony to be on it the next day with a black floor.
Matters what the floor is made of too. If it's hardboard on plywood, that's pretty easy to work with. If it's oak because the floor was originally intended to be a stained hardwood for a concert
hall, then the only way you're getting that screw back out of that
stage floor is to grind the shank off flush to the floor.