I suppose that # means $? To answer your question about the first paragraph, nobody knows since you're just saying that you will give me $5000 on Monday, but that is not enough for me to fully trust what you just said.

In gambling, you know there are no promises. People use "belief" these days just to cope that something that is not possible would be possible. The same goes for your "Uncle" story. Nobody knows if he's serious about adding $200k in your business.

The same goes to every single loan businesses out there. Promising future income is not going to cut it. I believe that in Lending section there's even that guideline, lol.

There's technical difference, but both are really not that reliable. You could be laid off from your job anytime, although there are notices sometimes. In gambling, you could just predict.
Considering the layoffs from tech companies lately, you could somehow see the similarities in terms of unreliability between the two, don't you think?