I have too much faith in humanity to believe that
the thing which beats out every other clearinghouse over sufficiently long timescales will be “dedicate unimaginable amounts of compute to find one meaningless number and in doing so commit 1Mb of data every 10 minutes (slower than ancient dial-up connections)”.
I clearly don’t know what that better thing will be (I have some vague ideas…), but still I can’t convince myself that Bitcoin will ever be humanity’s best-engineered clearinghouse.