FRC. Yeah, they're understandably concerned about what happens if every single robot has 1 or 2 extra wireless communications channels. They announced at least once to the audience to turn off any hot spots as they're getting tremendous noise and channel swapping for the RoboRios.

If you use a RoboRio and wpilib, there's first class support to feed USB camera into the Rio, through the official match/field wifi for your robot, and to your laptop's Game UI.