The obvious answer is that Hawkeye content gets more views / eyeballs / key revenue related metrics. Those in the entertainment industry wisely pay attention to those things.
A good question is….. Would a concerted effort to create more quality content that is not Hawkeye related would, in a reasonable amount of time, result in more views / eyeballs / better revenue related metrics? I bet sites have tried. I bet they have learned that this is hard and it is smart to go back to the Hawkeye well.