People have the option of federated sidechains or federated mints. Could even split funds into several different federations if we get to the point where there is that much demand. Or maybe one day co...
I'm all for these custodial or semi-custodial options, but it doesn't hurt to give people the option of using a non-custodial decentralized (even if not "trustless") mechanism for sharing utxos too, like the hashrate escrow.