How many bills can one online paid survey pay for?

If you take a good look at your monthly bills you will fond that only few of them are more that $750. Maybe your mortgage is higher than that. But more of the bills are much smaller that $750. For example, electricity, water, gas, Internet connection - theses are all in the few dozens to a few hundreds range. The funny thing is, that even filling out one online paid survey per day, can make you as much as $750 or even $800 a month, and easily pay for a few bills. I say funny, because I really don’t see why aren’t there many people doing this.