Saying you were 13/14 when horse armor came out doesn’t help your case arguing against their comment. It just means you were prime gaming age when dlc, map packs, and smaller content were replacing larger expansions. The acceptance of those (which based on your demographic you probably did accept) made it easier to transition to more and more egregious micro transactions.
There used to be (maybe still are) complete games released on mobile. They usually cost $6.99 and didn’t need more. If they want Elden Ring on mobile without tarnishing its reputation, they could sell a complete experience for $10 or $15 since it’s been a decade since those $6.99 prices. That’s what Elden Ring was and it was widely praised. That’s what the rest of their games have done and that has turned out well for them.
There may be servers for the multiplayer, but based on the fact none of the other From Soft games charged for it the cost must be minimal.
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.