Forum Discussion
1. Companies pay to have the dedicated button. So Google would need to pay Roku for a dedicated YTTV button.
2. No Roku can open a specific app when starting. It's simply not programmed to do that. Remember that unless the Roku is connected to a switched power source, it's always "on" so it wouldn't see a command to start a specific app when you turn the TV on.
That said, the latest Roku Voice Pro Remotes have a user programmable button (the 2nd generation has one button, the original Voice Pro remote has two) so you can program it to start YTTV if desired.
No one is going to build a devices that is dedicated to a specific service, unless that service provider builds their own. Roku actually started as a Netflix only player, but quickly realized they needed to support additional services. Since then, I haven't heard of any device that is designed for a single provider.