The stars of HGTV’s highest-rated show are poised for bigger things. As branding expert Scott Pinkser explains, the couple became too big for the small cable network. “They’re now instantly recognizable celebrities, immensely likable, and a trusted brand name in home repair and interior design. Just like Rachael Ray eventually outgrew the Food Network, the Gaineses are clearly ready for a platform that’s more visible than HGTV. In fact, the Rachael Ray business model of TV talk shows, magazines, endorsements and product lines might make a lot of sense.” As for HGTV, its dependence on talent-driven content will be tested with the departure of the Fixer Upper stars. ALSO: HGTV announces Flip Or Flop Ft. Worth, and the potential of new network stars.