you can't own your own money on lightning without making transactions on L1, and there is a limited capacity for people to do that. since this pressure exists, people are pushed into lightning custodians where they don't own their own money. lightning doesn't actually scale, it just rearranges itself into a custodial system by emulating banking. a good scaling solution would enable users to obtain coins on L2 and actually own them without having to directly touch L1. then L2 transactions would get compressed into proofs and inserted into L1 blocks. each L2 user would collectively pay into L1 transaction fees by having their transactions included in a proof. this blows the lid off of the node requirements, since the security is inherited from L1 once a transaction is published in a L1 proof. there are good scaling solutions and lightning simply isn't one of them.