How long until they are destroyed in the race riots?
You can still receive captions via cable or satellite. Instead of being decoded and displayed on the TV, the decoding and display is simply handled on the cable or satellite receiver. If you have Comcast's Xfinity X1, you press the A button on the remote to get to the accessibility menu.
You are partially correct. Any time you increase frequency significantly, amplifier efficiency drops. Innovations in semiconductor technology will help though. The other issue is the change in modulation techniques and the digital processing required to handle the new modulation techniques. This also consumes a lot of power. This will reduce significantly as the technology progresses.
HOLY MACRO!