Satellites can listen to radio signals and take photographs. As for the third complaint, about airspace, I suppose you're right: a few exotic aircraft do fly up

Satellites can listen to radio signals and take photographs. As for the third complaint, about airspace, I suppose you're right: a few exotic aircraft do fly up 20 km or above, so these could interfere slightly with aviation. So, presumably, they'll have to get a license to fly above the countries they fly above. Ho, hum.