Sounds easy but it isn’t if one tries to do it noncustodially. Needs to run a node, open a channel, get enough inbound liquidity and pay current on chain fees 2x for that if they haven’t done it when fees were low (and 99% of people who still buy on exchanges most likely didn’t).
I don’t think we can allow ourselves to be content with solving that problem through custodians.
I would love to see the problem solved by LN but it only solves it for people with already large channels and enough inbound liquidity. Which means most people will rely on centralized hubs or custodians if this continues to be the state of the fee market. The question is, how can this be addressed.