It would be great if there will be non-custodial solutions on higher levels of bitcoins. Especially because I don't see how on earth it will be lossible for everyone to even get any number of satoshis on layer one.

For many in Africa, Asia and South-America the first layer won't be an option, but holding bitcoin with a trustworthy custodian will still be a solution for many to get out of the inflation prison that their  local currency puts them in...