I can tell you right now that 99.9% of the people trading through their RH account has no clue what POET does, and they do not want to spend the effort understanding what POET does. I'm personally a computer engineer and it took me a few days of research to understand the OI platform and why it's so disruptive, so don't expect RH traders to do that.
Not only do we need investor engagement, but we also need something to show for it (ie supply agreements, contracts, the $$$ in general). POET can tout their tech and I fully believe in the tech, but without the dollars attached it's very hard to make retail traders notice.
Alternatively, POET can preach to institutions and those guys are demanding the same thing: design wins.