Turkish said:
Dude can make Half Life 3, Portal 3 and Left 4 Dead 3 out of his own pocket and his net worth would still be over $5Bn. And since they're a private company, they dont need to report shit to investors for making risky lootboxless, MT-less linear (singleplayer) games.

I cannot think of a single Valve game in past few years (2015-present) and know of nothing planned.  They are basically like Apple these days.