I am not super interested in nonD&D 5e games unless they are a radically different application or setting. But for fantasy, I'm good with D&D. Not that all of these games, and ones based on earlier iterations of D&D, don't have their own good points or things they do better. I think Pathfinder's action economy is easier to use and more intuitive, for example. But on aggregate, they are basically just different flavours of D&D, and I can already do all that stuff using D&D, without buying new books, and facilitated by DnDBeyond, which for me was and continues to be a game changer.
So I think non-D&D, fantasy RPG gaming will always be a niche, especially using 5e. They're mostly of interest to hard-core folks, like the one who post on these forums, who are sick of Hasbro. Fair enough. The fantasy RPG that I want to try out is Dungeon World, because I've played other PbtA games and they are a different enough experience from 5e for it to be meaingful. But even there...I'm kinda good for fantasy, with D&D. So I'll probably stick with Monster Hearts.
I guess what I'm saying is that non-D&D 5e games that just look like D&D but with different classes and species, or whatever...eh. They just don't really seem new. And a 5e "revival" when I'm currently playing 5e seems superfluous. If I really want to go back to 2014 I can just do a campaign where I deselect all of the later books from DDB, and done.