developers handle design, not finances. Microtransactions have always been in the interest of profit, not to make the games better. They were the markets compromise with gamers being unlikely to pay enough to cover costs of a Triple A development cycle.
Reminder that when the NES came out, it was still $60 dollars for a game, which would be about $180 today. And that's not accounting for all the extra manhours that now go into the major titles. Microtransactions and DLCs are the deal with the devil we made to keep games from being $200+ a pop