Ideas, once they go into the world, aren’t really yours anymore.
Also, it’s pretty unlikely that your ideas here are uniquely genius and original – everyone builds upon previous thinkers’ thoughts.
Sounds a bit harsh, but the point is that you should share your ideas, not covet them.
That's why you don't share them, until comes a time when the ideabringers gets the money and recognition they deserve. Until then, good luck going knee deep in the sewers of ideas.