Well, I think that the main problem is that the studios see a demand for pretty games. I guess, specifically, "we" want pretty games, with next gen high resolution graphics, FPS through the roof, awesome animations, and fast paced action. To that, players add that it has to be that way when running on a limping potato.Modders while a necessary evil, should be unnecessary.
If we demanded better games and stopped paying for and playing unfinished games and giving great scores to games with great marketting with game play that games 10 years older did better because it's expected, then they'd have no choice but to give us great games.
If players demanded next gen graphics, the best stories, uncompromising QoL features, and top notch quality, all at the same price, many studios would probably just fold.
A moddable game, with good support from the studio, is the only way to get the game that people really want.