Someday a bunch of home miners would find it economically feasible to hire another bunch of people to blow up a couple multi-petahash mines and drop the difficulty a few notches...
So you really think attacking a major mine is worth while to do?
Or are your just trolling?
It is easy to say blow up a 40 megawatt farm like bitfury' s in Russia, but it is wrong to say it.
Also we just don't need more terrorism in the world.
People making real efforts to be nice to each could go a long way here.
For instance any or all of the big three could sell some chips to developers .
Allowing more wide spread mining equipment choice.
This would be a lot easier then attacking farms of miners in Russia