Because I'm sure there are no national security benefits from having your rival route their communications over your infrastructure in such a way that you can cripple them in a conflict.
> Boeing said it...was neither possible nor required by law to monitor each bandwidth user after a satellite it built is in space.
Except it's their infrastructure now.
If they don't own or control the satellite, it's not really their infrastructure when push comes to shove. China might have contracts guaranteeing bandwidth, but I doubt that matters much in an armed conflict.
Nothing would matter much in an armed conflict between the US and China.
Armed conflict doesn't necessarily mean all out war.