Can someone confirm that the online mode offers nothing but DRM? The fact that they had to disable Cheetah speed makes me think they really are offloading some of the game simulations to the servers. It certainly feels like a much speedier game then SimCity 4 (when it works).
I don't expect more game companies to stay away from this; I expect them to do this a lot more for PC gaming. Probably not explicitly, but as much as people in /r/technology insists piracy doesn't matter, the companies continue to care. With online games, the need to worry about that largely evaporates.
Instead, I expect companies to put in proper rate limiting, fallbacks, and plan for the ability to spin up extra servers in case of high demand.