Don't you think such mining pools would go bankrupt? After all it's a pool, if reputation is damaged and folks join other more honest pools, then they are left with nothing.

Opportunity cost for the attackers is greater with bitcoin, as this is not pools that are attackers but certain clique of individuals and they do not make up all the pool.

Very nuanced this is; one can't extrapolate one way with such minimal analysis of attack verctors.