Tooth and Tail was pretty good, and it's only playable with a controller. I also played the hell out of Battlezone 64 back in the day, which is a FPS/strategy game.
It's a doable thing, people just haven't tried (aside from the above) very hard.
I think this is the big one. Consoles and CoD dominated the market for a long time. Has the pendulum swung back towards PC games? I have to confess, it's been a long time since I played anything. Games dev companies just stopped making games for people like me.
That is only true if Starcraft style RTS games.
As opposed to which other style/styles?
Arcade. As the godfather of all RTS, Herzog Zwei, used.