Another way these ad engines extract money out of you is by allowing competitors to bid for your brand name keyword. Try searching for Ozonetel on Google. There will be six competitor ads and then our website will show up :)
In our early days we used to be scared and bid for it.Lost a lot of money doing that. Then we talked about it and stopped. Again, no change in customer acquisition. Turns out, customers scroll down the ads and still click on our website.
Are our competitors getting some of our traffic?
Of course.
But my business is not built on the assumption that people will not find my competitors. Its built on the fact that people will explore options and try to find the best fit for them. So its ok.