How Far Can We Push That Towards Self Custody?

The main limiting tor is that thet coin itself can't scale to have billions of people holding their own bitcoin keys. The others actually does, not enough bit coin and not you basly can't create enough u t x os with te coin inside of them to have everybody unearth old dunkeys. I don't know if it's possible, but in the end, if it is possible, there'll basically be some sort of game that it creates with some sort of trade offcsort of like how lightning works. So even if it can be done, i think that it still won't be. It won't be a perfect solution, it will be like semi trusted.