I think China erred by sending such a large balloon that was visible to the naked eye, causing the American public to demand it be shot down. There's no hard rule about where national airspace ends and space begins.. a lot of times they fly too high for planes to reach, and under certain circumstances balloons are allowed through national airspace.. so if the balloon isn't causing a problem (like being a hazard to ai…
I surmise you need large balloon to carry required instruments on one platform. Going forward IMO PRC just going to fly them higher, US can keep shooting them down... possible until they can't, both will reveal US capabilities. At minimum, finding out f22 + missile ceiling is worth the cost. PRC isn't going to stop program just because US domestic politics goes full retard, if anything, that's strategically exploitable especially if PRC can make current WH admin look weak by flying a balloon at height that can't be shot down. Medium/long term, PRC building/exposing CONUS vunerability is net benefitial for PRC posture - it's their version of, in DoD parlance, integrated deterence. IMO US analysis missing strategic calculus on PRC side.