People are the harder problem. A game server is not a box you turn on and it just runs. The platforms themselves change under you all the time as do all the SaaS tools you rely on. Clients change all the time, too, and one missed update can make your game unrunnable. Folks don't want to train or pay the humans needed to keep server-based games alive.
Easy; if you don't want to pay for keeping up with SaaS, don't use SaaS! This is an entirely self-inflicted problem, and it's on you (as in, the gamedev) to fix it.
