I doubt that players can run towns by themselfs. It can easily be behind timewall what it comes for building and maintenance even there won't be other restrictions. Moreover, you can not progress from hamlet state for town without having several players settled on same town area.
"When a town area has been cleared of the creatures infesting it, any player can place the foundations of a house in one of the few dedicated lots of land in the area. Once at least one house has been fully built, a hamlet β and a citizen! β are born. A hamlet has no rulers and no rules. As weβve just said, anyone who can settle on a planet can add his own house to a hamlet on that planet. No specialized structured can be built in it β only residential buildings. If all the citizens of a hamlet leave the settlement or let their homes decay, the area becomes a haunted place once again. If, on the opposite, a hamlet grows large enough, any citizen can present himself as a candidate for the role of Governor. Once the elections take place and a winner emerges, the hamlet can finally transition to a full-fledged town."
However, the key point is this: "hamlet grows large enough"
How much is large enough..?