Google search results are basically a top 100 of pages with the best SEO for given keywords.
Whether the results are actually relevant? Who cares. As long as the user clicks a link and then clicks an ad, it's all good. The more time they try to find something and click the better for Google.
If someone could find something they need immediately and then leave the search then it's a fail for Google.
Basically it is in their own interest to serve you bad results.
Biting the hand that feeds IT
