With the notable exception of Yohji Yamamoto and Y-3 (his decadelong collaboration with Adidas, which is much more fashion than fitness), fashion designers and sports brands makeawkward bedfellows.
You hand out invitations to people all over town (who promptly decline to come) and then when you return to him, the game forces you to sit there for two minutes while no one shows up and Claptrap tries to makeawkward small talk with you at his empty party.
While some services could no doubt be compelling on the TV, the lack of proper platforms, standards and user experiences make them awkward to implement, and the current TV widget platforms are simply too limited make much headway in capturing the consumer.