Here is great article btw
http://www.celebritynetworth.com/art...-paris-hilton/
Excerpts :
A big difference between the two, beyond a bottle of peroxide, was that Hilton had been deemed a magazine cover liability. Former OK! editor-in-chief Sarah Ivens told me Hilton was a sales buzzkill. “I learned very quickly not to have her as a main cover. Women don’t love or hate her enough to shell out $4 for something with her on it,” Ivens said. In 2007 Us Weekly editor-in-chief Janice Min actually proudly announced a “Paris-Free Issue.” Kardashian, on the other hand, was a huge boon for the magazine market. Shape magazine had its best-selling issue of 2010 when it featured Kim Kardashian on its cover. Her Allure cover was the third bestselling issue of the year and a naked “art” photo for W tied for second.
and
Kardashian was a perfect product substitution for Hilton because she was the same, but better. Goods are classified by how demand for them fluctuates in relationship to one another. A substitute good can replace one that doesn’t evolve as quickly as the marketplace changes. Classic examples are the Discman replacing the Walkman and DVDs replacing VHS. When demand for one increases, demand for the other decreases. As Hilton’s behavior became increasingly erratic and she refused to evolve, demand for Kardashian skyrocketed. Kardashian also comes with a slew of complementary goods. Khloe and Kourtney Kardashian were like the beer to Kim’s pizza. Demand for one increased the demand for all. That was proven in 2011, when the entire Kardashian family made $65 million