Why do you think Toca Boca hasn't added an accounts feature?

I feel like an accounts feature would be really helpful for those who don't want their progress to be reset if they accidentally break their device or delete the game. I understand that the purchases can be restored through Apple ID or Google Play, but it doesn't completely save the progress of your game, especially with houses and characters. It can also be helpful if you wanna switch devices. I can see it being a problem though with piracy, and also hacking :( Along with the fact that Toca Boca probably gets a lot of money from people re-buying the bundles and packs they lost from losing their progress. But I wanna know what you guys think, what are your thoughts?