Why are Turner Classic Movies, Cartoon Network, Adult Swim and Boomerang moving under the Warner Bros. umbrella?

Variety

The WarnerMedia restructuring means that TCM, Cartoon Network, Adult Swim and Boomerng will no longer fall under Turner. As Variety explains: "The decision to move Cartoon Network, Adult Swim, and Boomerang under the studio’s management is an effort to better marry the linear TV brands with Warner Bros.’ considerable animation assets which include the Looney Tunes and Hanna Barbera vaults. Warner Bros. is also claiming another big piece of its movie heritage in taking over the management of Turner Classic Movies." Warner Bros. CEO Kevin Tsujihara says of the restructuring “A lot of people are saying this has been a cost-cutting exercise. I view it as a better alignment of the platform to the content, especially with kids and young adults. And TCM will provide a great opportunity to further monetize the Warner film vault.”