Music isn't static, there's new stuff being released every day. Even if todays music is being distributed all over the world there's always tomorrow's music to try new DRM methodologies on. As long as that's the case it's not going to make one damn bit of difference whether todays DRM gets cracked or not, all that says to the RIAA is what methodology *not* to standardise on and to go back to the drawing board to plan out the next one.
Even though the RIAA is defintely starting to feel the pinch of the Napster generation it hasn't yet got to the point where the member-companies CEOs are forced to beg on the streets. Sure, they might have to accept a lesser model of private jet but even the lesser model is still probably worth more than we'll ever see in out lifetimes. There is no real "pain" atm, just a slight ache that can be dealt with with something like Paracetamol, it won't get any worse than that for a while giving them plenty of time to devise a DRM system that works the way they want it to.
Besides, there's always royalties on internet connections and digital storage media

That way, they get a constant stream of revenue regardless of whether people are using them for illegal **** or not. The artists probably still won't but since when has the RIAA ever cared about them?