I understand that kind of attack from a government, specially one with enough opacity in their decisions and technical skills.

Corporations are much more complex. Somebody will have to justify the money spent, decisions are to be made, corporation decisionmakers will argue is an illegal move (it certainly is if you use the hash power for a double spend), other drones will suggest other uses for the money. Is not so easy to propose something like this,at least today.

An individual can do it but it will not be rational, since he can earn much more money by simply mining with that beast.