Hmm Why? I Get 70% income from SC I get 30% form MM BTC - if I collude with other pools to use 100% of my mining power to attack Bitcoin, I only lose 30% of my income.
as block rewards diminish over time i could Get 95% income from SC I get 5% form MM BTC - if I collude with other pools to use 100% of my mining power to attack Bitcoin, I only lose 5% of my income.
the intensives that prevent a 51% attack today are diminished as SC take value out of the Bitcoin Blockchain.
Only lose 30%

Are you serious? Do you really believe what you are saying? That someone, anyone, would intentionally CUT its own revenue!?
Do you realise the implications of such a "collusion" for the entire ecosystem?
I have no words