Why can't surverys be straightforward?

I went to cleanfiles via site:cleanfiles. I tried various files off sifferent users and various "popular" surveys, the Media Player install, the enter your email et al, nothing. I spent 15 mins, literal 15 mins on about 6 or 7 surveys. It's merely survey after survey until you're tired.

So why are we cheated by these advertisers?

P.S I WAS USING VALID INFORMATION.