So about 250k sats per person now if evenly divided. The ‘everyone should have a utxo’ story, idk how that will happen.. Atm it coast more than 10k sats to tx on-chain depending the timing.. 4% of “my life savings” to buy coffee. 

Quick search online said the amount of banks worldwide is "25 000. But sources differ significantly."

If we spin on that taught with doing the numbers; and there are more than 25.000 people who hold a whole btc (probably more toward 100.000 plebs or million idk) and in decades from now having a utxo with 0,1 btc would probably make you financially well-off.
Entrepreneurs with a nice bag of btc who have ambitions to build and invest on whatever is possible on the layers in time to come.. As in the podcast “1000x better than what we have now with fiat banks”.. 
Lets say we have double the amount of btc-custodians, compared to our current banks number, in the centuries to come who offer to store ones btc, and if they fail they die out quick, many others to choose from, so intensive is to be damn good at what you offer.

So in time and having patience,, let the mysteries of the universe unfold 🌌