Just FYI, you need very little skill to clone the WiFi access gateway of a hotel WiFi, and then blast their SSID from your router, to lure close guests into your honeypot. Once people are on your malicious gateway, the fun starts.
In a hotel with hundreds of hackers on alcohol, it's not unlikely for people to fuck around.
There is also no requirement to be a "good guy" to attend the conference.
The quality of an invention has nothing to do with profitability. People actively fight competing products and ideas. A good invention is worth nothing unless you whore it out to existing industry