The Sims 4 continues to mint money. It came out in 2014, but they've released expansion packs for it every year since then. The latest one came out last month. It costs $40. They've sold tens of millions of these expansion packs over the years.

I agree that it is weird that there hasn't been a AAA attempt to unseat it. You'd think that it'd be a safer bet than yet another hero shooter.