CEX.io admin in chat specified that as the 51% network dominance was reached they will announce we will be able to point our contracts at any pool. Now weather they mean any BITCOIN POOL or any SHA-256 is still unknown.
I firmly believe a money making venture will not shoot themselves in the face by destroying the network marketplace in which they are profiting and succeeding. There is no gain in destroying bitcoin now, unless they have some "counter agenda" that is as hilarious as hollywood or obamacare.
They are not a government, entertainment producer nor 'BigPharma.'
Just my 2 mbits.
Imagine they are as you say, just doing it for the money.
How much money would be made if they sold all their BTC, then performed some horrible acts destroying confidence in Bitcoin, then bought back in cheap, disbanded their pool and started again with new names, more money and experience?
The point is not to rely on their honesty, the point is to not require it.