@spacedream can only transmit to people if they have a receiver on the same frequency/technology.
here was an interesting piece about radio hacking:
yewtu.be/watch?v=74_N163HyhA
(no actual hacks in there, but a report about it)
then time will come people will figured out, surely. no need even talk about.
but yeh, maybe its time to diy sky scaner to get sats and freqs for sky wifi from ilon(/etc). something inside me telling me its can be used legally even without pay.