NA Reboot doesn't generate enough revenue to justify more/better servers
Unsubstantiated honestly, the server is packed with mvp golds and diamonds, the mvp buff chain never ends. It has less hackers than other servers due to drastically reduced financial incentives to do so, which would result in reduced bandwidth costs.
They never will. They have to show their investors that they have a large online player count.
Even if they are not actually playing
This paradoxical thinking of not investing in server infrastructure to support large groups, while also artificially forcing large groups online to inflate player counts, both median and peak amounts, is what ultimately might kill GMS at this rate.