Thanks so much for the great data on incumbent transaction processing costs. I am working on cooperative proof-of-stake, which is a method to have a single nomadic mint agent create new blocks on the blockchain at no effort. I would reallocate the block creation rewards, currently running $2 million per day to pay full nodes to replicate the blockchain on financial enterprise class infrastructure. My scheme allows for lower transaction costs and micro-transactions. Because the block creation rewards are so much greater than transaction fees, it might be possible to pay certain processors for order flow, i.e. negative transaction fees.

My ideas, if they become widely approved, may make bitcoin much more disruptive, according to your incumbent cost analysis.