Yeah, DA:O is nearly the only try of a RTwP "all public" game these next 10 years.... (not speaking about oldschool rpg of course). And the upgrade is not sufficient for actual video game industry. Just look at DA2 and DA3...
Larian could clearly do it. Imagine the video we had yesterday with RTwP... You had an all new type of gameplay with the core gameplay mecanics of Baldur's Gate. (of course, it probably require modifications/adjustments).
They just create an "Original Sin like". All of us will forget it in the past few years, such as all "wow-like", "skyrim-like", "diablo-like" and so on... They could choose to become legends but they didn't.