It is an absolutely self-defeating measure.
Even when you look at the prospect of raising government revenues, we are faced with government spending that increases year over year, each time reaching new levels; meanwhile, this proposed tax has regressive revenues, in that it is slated to generate fewer and fewer revenues over time. How it is useful to the government to raise that tax, in particular, quite frankly baffles me.
However, what is more important is that when you tax something, you get less of it. Yes, the main driver of productivity is investment. If you tax investment, you get less productivity. If you have less productivity, you have decreasing standards of living for all Canadians.