thats a strange argument to make. youre not wrong, but by the same logic
Why RTWP? Sure baldurs gate 2 did have that, but because of limitaitons of the time.
Yes it was set in forgotten realms, why not in dark sun? Its a much more interresting setting. "Oh because we already know faerun" well, thats an unknowledgeable viewpoint.
Most studios are good at one thing or another. You dont hire a FIFA developer to make a Sequal to Call of Duty do you?