Does Ideological Rigidity Pay?

Rick Perlstein questions the longterm viability of Obama's political strategy:

[Republicans] plant their flag in an uncompromising position, and wait for the world to come around – which, quite often, it eventually does. This is because in a media environment based on the ideology of "balance," in which anything one of the parties insists upon must be given equal weight to whatever the other party says back, the party that plants its ideological flag further from the center makes the center move. And that is how America changes. You set the stage for future changes by shifting the rhetoric of the present.