Microsoft acquired Minecraft from Mojang which meant a large percentage of the player base had a Mojang account. For years, Microsoft supported both Xbox accounts and Mojang accounts for users. However, this was costly and wasn’t helpful in forwarding the goals of the all-up Xbox gaming ecosystem. As a game targeted at younger players, parents would need to be the one who set up the new Xbox account. Since their kids weren’t complaining, they didn’t see the point in going to all that effort.