Well, there are places with PTC that pays horrible and I get that but not all places are like that and not all places paid that badly, even today there could be some that pays a bit better. The deal is some places figured out that people do not need to be limited, so they took more and more and more jobs and kept giving people more and more things to click as well.
In return it became a horrible low paying job, like click 1000 ads and get 1 dollar type of situation, or even 0.5 dollars (50 cents) but as long as people were capable of doing that for 10k times that was 5 dollars per day, find 5 jobs like that and we are talking about 25 dollars per day, 750 dollars per month, 9 thousand dollars per year. That is HUGE amount in many nations and not even close to minimum wage, that is literally acceptable middle class level of income in many countries.
Not possible. Just do some simple math, and you'll see.
I know this because I tried it several years ago. Clicking on one add takes 3 seconds, on average.
50,000 x 3 = 150,000
150000 ÷ 3600 = 41.666666667
You need around 42 hours for clicking 50k ads, and a day has only 24. From my experience, not only $25 or $5, but even $3 per day is hard to achieve with this extremely exhausting activity.
Meanwhile I won my bet placed on Fnatic some days ago:

Are any of you guys betting on those events?