ranger19 said:
But who would pay $20 a month to run their own servers? I mean, it sounds like you pay to run a server but it's free to join other servers. Wouldn't everyone want to join servers, and only a few care enough to pay the cost? Because that sounds expensive. And then how would you play online if there were not enough servers?
I'll break this answer into two parts, for both questions you asked.
1) Who would pay for servers? A lot of people, in fact! $20, while not insignificant, is not much money to host a social network over which you are basically God. It is
your server, no one else's. You can do whatever you want. Want custom textures, sound files,
entire new game modes? You have the power to do that, and you can bring your friends along to play it, and their friends and those friends' friends.
2) How would you play online if there weren't enough servers? The principles of economics apply to this. The number of servers will naturally fluctuate with the number of active players. This is guided by the <url=http://en.wikipedia.org/wiki/Invisible_hand>invisible hand that governs supply and demand. If there are not enough servers, people
will make them, for the aforementioned reasons. If there are too many servers, then many will simply be empty, which may cause the server owners to shut them down. The entire thing is self-regulating and shouldn't be a major concern.