can we stop calling them "prediction markets" and please call them what they actually are: gambling
Honest question which I think is at the heart of the question: What’s the difference between these and NYSE / Robinhood?
Investing takes x capital, put it into a machine, and x + (yield * x) comes out. In gambling, x is put in, x always comes out, but on the way out x is simply distributed among a different population.
Investing literally creates net value (or loss, technically) that didn't exist before. Gambling cannot do either: x is always constant, however x is divided up differently.
There's many videos about this: https://www.youtube.com/watch?v=HnRslDPlkg4