Imagine buying a house but you have not get access to certain rooms.

A bit off topic but that’s kind of how condos work btw. You don’t actually own the apartment or townhouse, you just own shares in a corporation that gives you the right to live in that space, with some severe restrictions.

Often you don’t have the right to mow your own lawn, you can’t keep certain things on your balcony, you can’t have a dog over a certain size, etc. It’s kind of nuts tbh. They give you the illusion of owning the space, but it’s a very restrictive form of ownership.