> Its not uncommon to search for product X, only to find product Z being ranked above the official store of X. Google search is advertisement first, quality second.

While I was at eBay, there was a company announcement praising one executive who had noticed that eBay spent a lot of money on placing Google ads for searches like "ebay", when obviously someone searching for "ebay" can find it in the search results. He canceled the ads, and it worked! There was no significant decline in traffic.

But that's a problem for Google, and the situation you describe is the obvious solution. If people won't advertise on searches where they should appear in the actual results, the way to get them to advertise is to stop having actual results.