I'm a bit confused about answer 4. What constitutes "working with the developer to create the game," exactly? It sounds like they just publish the game on Steam, itch.io, etc. and take a cut.
For many of us, who have to work a day job to keep the lights on, turning our game into our career is only feasible if we get paid during the development time. So if the promise is for a portion of the game's sales, then we wouldn't be able to work on the game AND work our day job or day jobs. If one of the winners is stuck in a position like that, are they just stuck, since they no longer have the right to publish their game and fund their next project that way? It almost sounds like getting second place is a safer career move than winning.