I just don't see the model changing. Stagnation has been the model of all the majors for years now. Something popular emerges, they formularise it and then beat it to death with the 'boring' stick. To be honest, I really couldn't care what happens to the vast majority of the major labels - they'll probably find the only way to survive is to down-size their assets and create a more flexible internal model by releasing some of the smaller companies that they own and letting them operate autonomously - that way, the inherent conservatism of the industry (which had led to their demise) might be overcome.
This just about answers it.