That was my first thought. If I had the resources, I'd built up that subreddit. Youtube videos. HN posts. Some trading libraries on Github. Some forums. Promotional deals to start out.

Previously there were other pyramid schemes, penny stocks, FX trading forums and so on. As those went out of fashion there is a new cohort of young people with great imagination who think they can beat the stock market. Some surely see a great potential there ready to exploit. They'd be silly not to.

Or to put it more obviously when everyone goes digging for goal, don't follow them, but start selling shovels. Then maybe take some profits and put some ads out in the saloons with stories about awesome finds of massive amounts of gold.