Honestly, if steam has to cut the 30% fee, its just more money for the Devs. Cross Plattform dlcs? Hell yeah.
I honestly dont See the problem with the lawsuit. Sure, its a loaoboll'ks mayt`, but why the fuck not? After all, why shouldn't steam get even better than it already is?
One thing to remember is that the push to Linux is a preemptive act of self preservation, so that will not falter unless they change strategy. Gaben talked years ago about not being beholden to Microsoft to host their platform and seeing the introduction of a Microsoft app store + locked down apps as trouble on the horizon. The fact that Linux is what the community wants is a happy coincidence, companies are not your friends.