What does this mean? I think you are trying to say that most traders lose their capital in the long term, while only a few can make a living. I also think you are missing a big point here: psychology. Many smart people get great insights into the market, only to get beaten up by their own fear or greed when they don't follow their own trading rules (ahmm...me included!).

I would make the argument that most traders would greatly benefit by automating their trade ideas (easy to do these days with many brokers offering APIs, and building trading bots in python is not very complex) to eliminate the psychology factor. With good trade ideas, backtested over historical data and regularized to prevent overfitting, I think many more people could realistically make a consistent income from trading (which doesn't have to be their primary job anyway, since automatic trading would not need to consume all of their daytime productivity)