MS tries to make the best of a bad bargain. Well, not so bad, because they earn a lot also from BD, but neither the best, as MS would have earned more from HD-DVD, owning its most widespread interactive contents implementation, while interactive contents for BD are managed by a flavour of Java, that MS fears and hates.
The defeat of BD, moreover, would have been a terrible blow to Sony, and to PS3, nullifying a selling point and a justification for higher price. Anyhow, although about power it's not a victory, about money MS can't complain: BD victory cost Sony money that it will recover later, while MS will profit from BD since the beginning.