It's just a matter of success and failure; once it fails, you won't finance again. But if the person is winning, that would help you earn consistent profit, provided he sticks with the same setup.
That's how a gambler should think. It shouldn't complicate things. We're all in this to expect two possible outcomes: either we lose or we win. Similarly, when trusting a person, it's akin to a gamble with agreed-upon terms. If they succeed, we win; if they fail, we lose. It's that simple, right?
Absolutely, agree with you on that, as gamblers, we often don't focus on the concept of
'safety.' We're drawn to the thrill of taking risks and pursuing huge rewards. Consequently, we're willing to do whatever it takes to enhance our chances of winning, even if it means placing trust in someone else to do the winning for us.
While financing a gambler may sound like a dubious idea to many, and perhaps to most gamblers, the fact that it exists (as shared by the OP) suggests it's happening everywhere. Consider it a norm in the gambling realm.