I've seent his done at track side garages, usually just between friends though. I can say from experience that if you are at a stocked shop, you treat it like crap! Most folks borrow tools and keep them, break them or leave them in places they don't belong. This causes all kinds of issues for the next guy.
Imagine you got the shop at the end of the day and people had "lost" all the tools you needed to get your work done, or broken the lift or whatever. Do you still have to pay? Can you get your work done? Etc.
I like the idea, but I think in execution it's poor because people just don't care about stuff that isn't theirs.