First he sat on the Sandusky investigation for a couple of years while he was Attorney General and running for Governor, while collecting sizeable campaign checks from board members of Sandusky's foundation/victim pool. Once elected Governor, he incurred the wrath of all graduates and current/future students and their families of the state's public colleges and universities, by slashing state funding 40%. Then he pissed off all the Penn State alumni by bragging how he, Corbett, manipulated the abrupt,over-the-phone firing of Joe Paterno. (Paterno had refused to endorse Corbett in the Governor's race.)
And I haven't even mentioned how he's whored out the state to the fracking industry by refusing to impose extraction fees (even Bush's Texas and Palin's Alaska collect hefty extraction fees) on Big Gas; over-riding local communities zoning restrictions; and gutting the state's Dept. of Environmental Protection to prevent reasonable scientific monitoring/testing of the impact of fracking operations on public health and welfare, and local government's infrastructures.
He doubtless will be appointed to multiple boards of oil and gas companies and make millions, once he leaves public office. I think he should be run out of the state.