How much do people make on Youtube?

There is no set amount people make. It depends on ad views and other factors. To get paid, you have to have $100 in your Adsense balance, which is about 100,000 views. Not to mention that Google takes a cut of what you make, and so does Uncle Sam....

Unless your brother gets thousands upon thousands of views each day, he's not going to be making much money for a very long time.

The old rate was something between 15-20 cents after 1,000 unique views. This means all those thousands must watch the advertisements.

There is no set amount, it depends on how your viewers react to the adverts attached to the video. More clicks on ads, more pay.

But numbers or $1 or $2 per 1,000 views is more reasonable, and probably in line with what he's seeing.

If you want to make money, you need views up in the 100,000s

If people get $100/1000 views, everyone would be a millionaire and YouTube would go bankrupt!