of course. my point is that we don't know if it will be enough. and i am not saying linux is a risky bet, because there are no safer bets to make. (other than gabe taking his earnings and keeping them for himself)
if microsoft shuts out Steam, then valve will lose more than 90% of its current revenue. despite the insurance policy that just might kill the company outright.
and, the more revenue valve gets from linux, the more of a threat it becomes to microsoft, which makes microsoft trying to shut out Steam even more likely.
our only hope is that regulators prevent microsoft from even trying...