I don't know if the government truly wants to implement this,but with all the articles mentionning the possibility of it, they are going to benefit from a windfall this year a lot of folks are preemptively cashing in some gains as we speak. 
Obviously the true wealthy will not be impacted as he has parked his money in trusts and other tax shelters
On another subject, I am surprise that there is no talk of an inheritance tax.... maybe it is because Mr Morneau and Trudeau inherited their money ....