This is a great article by Glenn Reynolds (Instapundit). He's spot on with this. Innovation is largely a capitalist enterprise. As soon as the politicians get a hold on your health care, it's inevitable that health decisions will become political.
"Fashionable" with large, boisterous (think breast cancer) advocacy groups will get the lion's share of research and development dollars. Less "popular" diseases (think chronic renal failure) will fall by the wayside.