Gambler for hire

How big a cut would a pro gambler take if one was for hire. Haven't looked into yet at all and don't have any money to invest, asking purely out of curiosity.

Let's say I pay someone 10k and ask for a 200% return cap.
So this means if he plays that 10k up to let's say 50k,
he owes me 20k and gets to keep 30k, my profit being 10k total.
If he sucks or is just unlucky and remains at 10k after playing it up and down again, nobody lost a dime.

Anyone know if there are players who do something like this and what kind of cuts they take or other standard rules/regulations?

What if they lose it all, then what?

The person who "hires" (that's not really how it works lol) a gambler is always going to take a bigger cut, as it's their money being risked. How much of a cut depends completely on who "hires" the gambler.

Breaking even, or just remaining in the realm of breaking even, is not the goal and is not going to be acceptable. Whoever "hired" the gambler is going to expect the gambler to come up with the cut they were expecting. Period. How the gambler does this is not the problem of the person who "hired" them. The same is even more true if the gambler loses money.

It's pretty much all downhill from there when things don't go well...

.