The video is fake. FTP doesn't have any capabilities for remote execution.
Also, running games over network is too slow (line speed is 12.5 MB/s - actual speed is going to be lower) and introduces a lot of lag. There's a reason MS chose USB instead of ethernet for the ODD emulator in the devkit's sidecar.
Essentially, it's impossible for two reasons: (1) too slow and too laggy, and (2) FTP doesn't support remote execution.