I want to argue from a different perspective that everyone has a nervous impulse about want and curiosity, the basic nerve of desire will make the gambler become addicted, and other nerves tend to make people curious for deeper analysis and mastering technique as a whole. If gambler can control 2 of these nerves, gambling risk will be lower.
People that has the ability to master those techniques that you mentioned would not be gambling that often as they know how to control themselves and probably be doing other more important tasks.
If you always lose, you probably play on rigged sites?
Possibly, but sometimes luck is also not on your side.