Are you kidding? it's the exact opposite.

I as someone with practically zero marketing budget, effectively no web or brand presence compared to what I'm selling and with no expenses for supporting the product can get a percentage of sales from the marketing, development and support efforts of a multi-million dollar international company?

There's nothing that monetizes better then affiliate links (other then building your own service of course), CPM is literally cost per thousand of views and CPC pays cents per click and you have practically zero control over the content.