I'm pretty sure McGuinty will go down as one of the lesser Premiers in recent history. There is just a meta-incompetence that permeates his entire government. In his term, I think he has maybe made 2 or 3 tough but justifiable policy moves (the HST, and I guess the Health Transfer Tax), though it doesn't help that most of them involve one way or another increasing taxes. Other than that though, it's just an endless wave of populist intervention in the economy, liberal application of spending to key constituents (nurses, teachers, civic workers) with little to no oversight, and sentimental nanny-stateism. Even in 2007, when it was abundantly clear that the economy and tax revenues were about to fall off a cliff, he refused to take a stance.
Politicians love claiming the financial crisis came out of "nowhere", but industrial woes have been documented for decades and there has been no shortage of warning that Ontario's industrial sector was woefully uncompetitive with the USA and was mostly being propped up by a 60c Loonie. The solution? Hell if I can say there was one. The approach thus far has consisted of incoherent government intervention (like Micheal Bryant's bizarre claim the Ontario not only can but must "pick winners and losers") subsidizing all manner of things we probably shouldn't subsidize be it solar panels for a province that doesn't get much sun or the Chevy Camero, the venereal disease of cars. To placate the urban types, we get Richard Florida, which is basically the most disappointing guru for a province like Ontario. There has been painfully little discussion of how we can position ourselves for long-term economic growth.