Investors own their investment. Players don’t own anything. You don’t even own the game, or the additional digital content you purchased for it. You merely have the permission to play the game and use that digital content, and that permission can be revoked or altered at any point. If you don’t believe me, go read the EULA.
No, you’re not an investor. The word “invest” has several meanings. One of them is “to use something (such as time or effort) for a particular purpose”. Another is to “to spend money on something in order to improve it or for financial profit”. The word “investor”, however, refers only to one of those meanings.
You’re not an investor because you put time into something. You’re an enthusiast, or a supporter, or a hobbyist, or a myriad of other things, but not an investor.
It’s very, very different. When you go to a grocery store and buy bread, are you “investing” into that grocery store? No, you give money and get a product in return. When you go to a barbershop to get a haircut, are you “investing” into that barbershop? No, you give money and get a service in return. The owners of those businesses can do whatever they want with your money, and you can do whatever you want with the bread you bought or with your hair, but there is no further relationship between you.
Funcom takes your money and “invests” it. Not you. You could call your purchase an investment, and I could call my bicycle an airplane, and we would both be wrong.
The key word there is “trying”. No, they wouldn’t be creating their own playground, they would be trying to do so. And if they succeed, then either “their” playground is the playground that Funcom wants to see on their servers, or Funcom is failing at their jobs.
And a server that keeps staggering under the load and lagging like hell is so fun to play on, I imagine that everyone is flocking to it in droves. 
But I guess people will twist their logic in a pretzel rather than accept their own share of responsibility when sharing something…