There is an awful lot of uninformed scaremongering on these pages regarding the tax changes. 
Remember Finance Minister Flaherty under Harper?  Remember him begging and pleading for the private sector in Canada to invest the billions they were sitting on to generate more economic activity and jobs?  And they did nothing. The Harper years were anything but economically successful. 

Now Morneau, I think gets it. These loopholes have had an inadvertent, unintended effect of depriving the economy of investment. By altering it to be fairer and more effective affecting a small percentage of people it also provides an incentive to invest.  Possibly more jobs.  Good idea. 
If certain people wish to leave Canada and their small business over this issue "capital flight risk" then by all means leave. I don't think that's really true and it's scaremongering.