Very much so. Even planning it, without carrying it out, would be subject to criminal conspiracy charges. Recruiting people to the scheme (even the investors) would be soliciting a crime. It's illegal to interfere in the outcome of the game once the bet is placed. Finally, once it was proven you rigged it, you'd probably be forced to return the winnings anyway.

I'm sure an actual attorney could come up with even more reasons this is illegal.

Well darn.

Don't give up. You just need more investors to spread the risk :)

Doesn’t conspiracy require an act in furtherance of the crime?

Are you sure that the party who has solicited the crime is not the investors?

What makes it illegal to interfere in the outcome?

I'd think you'ď be VERY hard pressed to bet $10 million dollars, but I don't know that.

Pretend to be 1,000 people, and each sock puppet bets $10k.

Who’s taking the other side of the bet though? No smart bookie will dig themselves in such a hole, it would obviously be fraud and they’d stop accepting bets

One of the massive platforms, like DraftKings. They won't even notice. The point of all this is the effect of making sports betting legal.

Criminal conspiracy. The agreement to commit the crime is the crime. Not the assault. That is another crime.

A predicate action must be taken in order for this to stick. However, this can be literally anything to move down the proposed path of conspiracy. So if you made the plan then downloaded the app, that's criminal conspiracy