I see this sentiment A LOT, and it simply isn't true. Valve have always been making games...this whole time, it's just that they are beholden to no-one but themselves, and they are perfectly fine with shelving years-long projects if it doesn't cut the mustard. Reminds me of Prince shelving entire albums because that wasn't his mood anymore, hahaha. Anyone else would've made Half-life 3 and cashed in 20 damn years ago. We would be on Half-Life 9 by now if this were Microsoft or something, ya know? You can call this lazy, or resting on their (Steam) laurels, but I'll take them at their word that they see their projects through to completion when they themselves are satisfied with what they created, and for no other reasons. As a Half-Life fan, I find this INCREDIBLY frustrating, but I respect them for it...and it's pretty damn hard to argue with the pedigree of their output.
I respect it too, for the most part. Like you said, for diehard fans it can be frustrating that you don't get a sequel for over a decade, if not longer, let alone regular iterations.
On the other hand, it almost always means once a sequel DOES come, it's out of pure desire and creative passion, not simply to please greedy shareholders. In terms of other platform holders who do have shareholders, I think Nintendo generally strikes the best balance. That might sound weird given they have so many damn spinoffs of core IP, but that's just the point: rather than milking 3 3D Mario platformers a gen, you get one every gen. And in place of those sequels, you get spinoffs with those characters and settings.
Like a lot of Nintendo's stuff of course has a set pattern and does certain things that are "safe", but since most of their games don't rely on super-fancy graphics, epic stories or hype production values, they're forced to innovate with game mechanics & systems more than most others, on average. SIE aren't that far behind, but their current iteration is too focused on GAAS to my tastes, and that GAAS focus is driven a lot by market trends.
For example with Concord; I know some people are ripping it for a bunch of reasons that have nothing to do with gameplay, and I'm wiling to give it a chance. However the actual gameplay they showed didn't make it stand out from the many other hero shooters already out in the market. It just seems to blend in; if there is a unique gameplay hook, they should've shown it off with the gameplay reveal.
This is one of the most realistic and frustrating comments I've seen. CGI trailers are not realistic. But for the masses, I do believe they spark unrealistic hype, and they also increase profit for people that may not even end up playing the games.
It reminds me of my thoughts on streaming services or gym memberships of people that only stay for a week. They thrive on people that throw out money without actually engaging in profits. Companies thrive on people that take in the shiny toy without actually getting their money's worth.
It's a crazy idea, but drones do keep companies going a lot of times. I want that to change
It'll probably never change. Too many simpletons who don't realize they're simpletons, in gaming.
Sadly :/