Roger never left bitcoin to want to come back to it. he has always been "in" bitcoin! things like BCash are only additional revenues for people like him to make themselves richer.

you are right about the "political value" of this domain though and i don't think he will ever sell it even if BCash died and someone offered a very good deal for the domain. it is not like he needs the money. at some point having the "power" is more important than the money.