Divinity Original Sin has been on the top sellers on Steam for over a month and the same goes for GOG.com but Bioware seems to think people don't want that anymore?
It's not necessarily that they even think people don't want it anymore, but they think that not enough people want it. And for their purposes, they're right. Larian is obviously making great profits off D:OS, but they're a 40-person company. EA has 10,000 employees, these kind of profits aren't worth their time. They're targetting the mass market, the unwashed masses (aka: console players). If you're looking for the D:OS kind of RPGs, there's no point in even paying attention to BioWare anymore.