I think the rumblings are "they" are already working on their own block chains.
The illusion "they" don't understand and "they" need the miners and coins to pay them is a false one. They can connect their banks as the computing power for the network.
Same goes for anything similar a copyright chain, a land registry chain, even maintaining the network may be the cost of transacting.
Is bitcoin looking weaker as a result? granted you have well established infrastructures and existing systems and services. Will that inertia be enough?