Of course, they can buy it, but what if they are good programmers but poor as hell. That's why poor people can't really break out of the community. And it isn't a must thing of course but who wants to get rid of the public shits they create their own servers instead to invite their friends. I have experiences with public ones, it's really annoying to talk there cause you get every single notification of long long arabic names, and stuff like that. It's a fact that an own server is calm, there are only the people who you invite, and you don't need to ask your friend like ey, could i invite this and that.