The hosting sites pay their server with the premium membership, so the more they have uplodeur more they make money. How to attract them, is obviously giving them a percentage of sales and some advantage. As with everything, there are many concurrency and everyone decides to choose the hosting site that suits him.
In my case I choose the site
Flyfiles because this site offered me stability for my files that I have never found elsewhere. On this hosting site and this forum, you will find many files from many xxx sites and permanently!