CCDev is complimentary to SLS in that NASA doesn't have to build Ares I, nor accept ULAs EELVs that are going up in price. And to say we don't have a spaceship to launch to launch on it isn't true because Orion is already largely built and a flyby looks to happen.
"Rocket size has been stagnant because there is no demand for HLVs in the 70 ton class
." There was also no demand for R-7. That LV was bigger than 'needed. Korolyov could easily have waited for warheads to be shrunk down. But his answer wasn't to shrink the payload--but make the rocket bigger. The Gov't was behind him even before larger launchers came into their own as satellite launchers. Reusability? That I fear is what may make Musk broke.
Now a more squat Phil Bono design--more similar to what Bezos is looking at--might be better than landing a tall telephone pole on its tail as is to be done with Falcon.
The big reason I want Space X and Dream Chaser to work together is to keep them out of that ULA culture. Frankly Dream Chaser would have a better ride on Falcon Heavy and might evolve into an even more capable version. Muskfocus stays on the rocket, Dream Chaser on their lifting body.
I want Bezos to have some money too. I wonder if he might try to go to Brunei, Dubai or Qatar where folks have more money than they know what to do with--but ITAR restrictions and all would spook many.