

There’s a sentence in the article I linked to in another comment that, in the city the article was about, there were data centers for Microsoft and similar companies that had required high-speed internet infrastructure be built in town despite its small size. I suppose, based on what you said, that speed wouldn’t be too essential but you would want stability to maintain a connection. Satellite internet probably wouldn’t be great for that (maybe Starlink is?) in which case you still want to run some kind of cable.
What they didn’t mention is that Baldur’s Gate is a Dungeons and Dragons franchise. DnD is magnitudes more popular than it was when BG2 released, to the point of being at worst nearly mainstream. What has sold people on BG3 is being able to play their tabletop game in video game form.
I do think Larian’s pedigree and the Baldur’s Gate name were contributors to its success, but if there was one driving factor it’s the brand recognition of DnD with the marketing of an AA to AAA game.