CD Projekt of course. Yes, so far they have "only" released three games and two large expansions, but considering that these games are better than 99% of games from other companies...plus of course their DRM-free stance, post-release support, no preorder DLCs, running GOG.com aka golden standard of videogame distribution..nobody comes close. Not even Valve, which is sad. I used to love Valve, but now they are all about multiplayer BS and stupid microtransactions...meh.
Second place probably Square Enix tied with Bethesda, I despise business practices of Bethesda but I like their games, especially from Arkane.
btw gotta love the hyperbole about "horrrible downgrade" of TW3 when it is still best looking RPG ever made and amazing looking game in general...and rewatching old trailers, they don't really look that much better, just different.