What happened to the RTS genre like Supreme commander where you could build massive armies and bases?

I'm old enough to have played the original Warcraft games StarCraft games and then the great command and conquer and total annihilation. the top being supreme commander. it blew me away that i could build as many units as my CPU could handle in Supcom.

But now, its so hard to find RTS games at all and when you do its some indie game with some kind of strange twist/gimmick because they cant afford to invest money in good AI.

The last good RTS i played was Supreme commander and that was 2007.

What happened? any hope for the future?