cont'd...
day traders who are winning are therefore lucky;
7. It is inevitable that there will be winning day traders, but they have usually been lucky enough to focus on stocks (options, etc) that were going in the right direction for  reasons that probably have more to do with fundamental trading strategies than day trading;
8. it is not clear that these latter traders would not have done better simply by 'buy and hold.'

With so much acting against the day trader, most definitions of "day trader" refer to it as a speculative activity... ie it is gambling without a realistic expectation of a positive outcome. Therefore the proceeds are untaxable under Canadian tax law.