Why do people trade when they will most likely lose money (statistically speaking)?

Agreed with greed.

if it was that easy, why aren't these people head hunted by GIC, soverign wealth funds, private wealth managers to generate returns for the whole country and economy? why aren't they getting a fund manager's license, like the robos, and legally manage people's money for free? isn't that more noble than coaching a few selected people who are willing to pay few thousands of course fees?

Greed