The ratios for these calculations only include participants. There are seven billion humans, the vast majority of whom are either not old enough to trade or not

The ratios for these calculations only include participants. There are seven billion humans, the vast majority of whom are either not old enough to trade or not in regions where they can actually participate in trading (in the speculative, not investing sense). Of those even eligible to trade, most do not engage in it in any kind of intentional capacity, let alone professional. There are not seven billion traders. At any time in the United States the number of funds is in the thousands. Adding in other countries, and being generous with the term "trader" (or "investor", "fund manager", etc), I would be willing to agree that there have been millions over the past two decades (the same time frame as some of the track records I've mentioned). What does that leave us with? We're still orders of magnitude away from the successes we observe emerging due to chance. The numbers just aren't there.