The thing is you really can't compare all the other CRPG in recent years with BG3. Since they were all done by small teams with Indie budgets. BG3 seems to have a budget that at least is in the upper AA area. The CGI trailer, they made must have cost a small fortune(the studio who made it usually works for AAA studios like Ubisoft and Sony!!!) which should give us an idea of how much money Larian is willing to spend on this game. So I highly doubt Larian cares about these small teams are doing, the same way Activision doesn't care about Indie shooters like Insuregeny are doing.
I have no doubt that Larian cares what these studios are doing, because they are fans too! I wouldn't surprised if some of them back these smaller studio VRPGs games kickstarters as fans.
Yeah, most of them seem to know and respect each other. The devs of Inxile, obsidian, Larian, CD projekt, the defunct Troika,... are joking together in twitter, they put photos in the gamecons,... some of them worked in several games of those companies like Chris Avellone. Josh sawyer and Tim Cain used to talk in their interviews about Dos or Pathfinder:kingmaker in a appreciative way, as Swen Vincke did with tyranny.
Some of them are even D&D fans too, they put a show together playing a short PA in a games con. And it showed that It wasn´t the first time they played.