An ER doctor working 60 hours a week is absolutely 1000-10000x harder than the guy watching the conveyor belt of Mountain Dew bottles waiting for one to fall down for 60 hours a week (a job I actually had at one time). There should be, and is a massive gap in compensation for those positions.

I dont even see how this is debatable. I certainly don't disagree that their are privileges and opportunities that are unequal for everyone - but I don't see it as being a factor that absolutely prohibits success.