More people would try playing an instrument if they could borrow one to try it out. I already play several, but I’m running out of money and space for more. It’d also be nice to pop down to the library and check out the one I’m currently obsessing over to see if I want one permanently. Hell, I’d donate ones I hardly ever use to add to the diversity. This wouldn’t replace buying instruments any more than regular libraries ended book stores.
As someone who teaches percussion and constantly has to deal with kids that I KNOW breaking publicly used shit, I can’t imagine the instruments would last long out in the wild. Most instruments require care and maintenance from someone who knows how to take care of it. Even on a day-by-day basis.
I gave no consideration to such things. I was only craving a large building with as many different instruments as a typical library has books.