Eh, it’s not quite that simple. I won’t pretend to be a game developer but I do know it’s not as easy as just flipping a switch and everything works. There’s a time and resource cost that may not even pan out
Consider that the most often given reason for fresh servers is to start new where everyone is on equal footing with no gold inflation or bots or anything like that - but you’d only be fooling yourself if you think it’d last even a couple of weeks at best, before we’re back to mage boosts and gold selling at the wazoo. Then we’re left with another server taking up space that’s no different from already existing servers, that’ll probably end up as a ghost town as people go back to their old characters because at least they have all this progress already done, and the cycle begins anew with more clamoring for more fresh servers