Most professionals rely on the advice of their lawyer or accountant when it comes to the decision whether of not to incorporate, in the case of Ontario doctors, it was recommended by the province to do so in order to assist in keeping the wage costs down.

If I was advising the CIFB, the PM and the Minister of Finance have characterized, incorrectly, those who have incorporated their businesses as tax avoiding cheats.  In short, have made it rather personal.  

I would consider returning the favour, and go hard after the two primary accusers and investigate how they have structured their own private incomes and holdings and publish the results.  People in glass houses and all that.....