I could see The Sims 4 lasting until the next "milestone" date, aka the 25yr anniversary of the sims. I would not be surprised if they waited until then to release TS5. Which tbh is just fine with me. I think the devs have definitely learned from the base game fiasco with TS4 I don't think they will allow that to happen again because I think it would be the end to the game. The community would stop investing in TS5. I'm not saying it will be 100% perfect but I am pretty sure they will make a more fleshed out and solid base to the game even if it means pushing the release date.
