I agree that big publishers/developers have dropped in quality for a while now I really think it's because game industry became very money oriented, all those microtransactions, pre-orders, seasonal passes etc...It's more about marketing than gameplay. Just look at Fallout series, it shifted from one of the most complex RPGs with a wonderful story into a sandbox with nearly no story and dialogs at all. IMHO it's because it just sells.
It's been quality time for smaller publishers though. Shadowrun series is a huge success in modern RPGs, Pillars of eternity, Tyranny, Wasteland 2...in the other opera Stardew valley is an excellent game, much more than just a farm builder. Darkest Dungeon has a great atmosphere and rewarding gameplay, UnderRail I haven't tried, but it looks very well developed and received high marks. Things change, and surely there are lots of disappointments.