The only thing I see that's stagnant is originality. I came of age during the golden era. I experienced the industry from the NES to present. The games and consoles released during the NES to PS2 era were breathtaking. Every year, something was blowing your mind. Consoles dropped about every five years, and every time they did, they blew the last one away so thoroughly, that you literally would toss the old console in the closet and let it collect dust, or sell it off immediately for a credit toward the next one. Remakes were almost nonexistent. Everything was new. Everything was groundbreaking. It was insanely creative, and you were never hard up for something amazing to play.
This is something I no longer see, and why I rarely get excited for anything. I own a PS5, and I'm eager to see what Nintendo does. I still have an Xbox One and will occasionally subscribe to Game Pass when I want to try something out. But compared to the days of SNES, or PS1, or Dreamcast... there is no excitement. It's all pretty much meh. And that's what I think is the industry's biggest problem.
Of course, if you didn't experience the golden era, you might not know what you're missing, and if that's the case, I suppose it's not a problem.