You're right, Jess, Unity doesn't have any limits on publishing thankfully. That's how I made the demo available! The problem becomes selling the game. Without the software license, any sale of the game would be illegal
Graham, that's definitely crossed my mind. I've used web player for smaller prototypes before, but for some reason I prefer the experience of opening an executable and playing it that way. If more people express interest, I have no problem uploading a web version as well