To be fair to Bethesda, the studio really isn't known for microtransactions. In fact, it's really only Fallout 76 and their mobile titles which have had microtransactions at all - prior to that, they had none. I don't think the mobile titles represent any sort of see change, that's pretty much to be expected from a mobile game, and I think the studio saw a hefty backlash to them in Fallout 76. Moreover, I think the biggest reason why they're in that game specifically is because it's an online multiplayer game.
I'd be quite surprised to see them put microtransactions into a proper single-player title, especially since recent big games like God of War have shown they really aren't necessary for such games. Even if they did, I expect they'd be fairly minimal, and likely as a trade-off to paid DLC, as we saw with Fallout 76 - fund DLC development through microtransaction sales. That's not such a bad business model.