[WFHRenaissance]

No one would use a network with this level of centralization, or at least, it would be unwise to.

[cowtools]

like a 51% attack on a PoW through pool conspiracy, it will be impossible to tell if (when?) the network is controlled by a single entity.

By the time the public has figured out the plot, it's too late: the attacker has already run to the exchanges with double-spent coins.