[abdullahkhalids]

The abstract thesis here is that if you have a near-monopoly in some domain, where the product's quality is dependent on someone else, for example,

* links and content on pages that Google search engine ranks

* reviews on the Amazon market

then everyone is going to use every trick in the book to come out on top, and that will just constantly degrade your product.

If there was competition in the domain, then the tricks used for one search engine might not work for other search engines. So the situation might be better in the long run.