I don't get it. If that's true, where were all these people when Poe, pathfinder etc came out? I seriously doubt it
Poe isn't D&D or BG, "spritual successor" were the words used to describe the game and in my opinion was nothing like it. Poe 1&2 are ok games in their own right but BG or D&D they aren't. People who play D&D TT want the world they imagined realised in the way they understand it otherwise why bother?
BG1&2 haven't aged well but in 1997-2000 they wrote and defined the RPG standard. Poe compared side by side to BG2 on an equal time frame is like comparing The Empire Stikes Back to The Last Jedi. D&D fans knew this just like BG fans hence no increase in sales of other games.
Never even heard of pathfinder until a week ago so I cannot comment on the game itself. However after reading reviews of it I won't buy it because....drum roll....D&D like is not D&D. Funny that. Read the same boast 20 times and everytime they were nothing like it.
D&D and FR have nearly 50 years experience using methods and systems that work with established lore that could fill the great library. Somehow I doubt some 28 year old creative writing intern at Larian is going to homebrew a better system. Looks mean nothing, worlds are built on limitations and rules. Because something "looks like" Baldurs Gate but plays by a totally alien rule set makes it totally different. This concept is extremely difficult to grasp for some people.
Diablo 3 "looks like" BG, Path of Exile "looks like" BG, Pillars of Eternity"looks like" BG, DOS "looks like" BG. None are anything like it, nuff said.