At worst, Cosby will get probation, that seems to be what happens if you're famous and wealthy enough.
You can buy "justice" in the US today if you have the resources. Ethan Couch, the "affluenza" kid, killed 4 people and left another one paralyzed while drunk driving and just got probation. Robert Richards (heir to the DuPont fortune on his mother's side) raped his 2 year old daughter and also got probation, which for all intents and purposes is walking.