How long until the AppleTV will look like your own in-home billboard? At least on the NVIDIA Shield you could just not install the update that changed the homescreen to incorporate ads (or install an alternative launcher). With the closed eco system of the AppleTV, the options are probably limited if/when Apple decides they need to extract more money from you by blastering ads all over the interface.

Projectivy Launcher, for Nvidia Shield Home Screen. Before that I was building a rooted firmware and downgrading from that awful advert ridden update. I also tried Dispatch as a home screen replacement, but Projectivy wins.