Starlink launched by F9 proves that it can be done in principle, but it would take long enough to deploy that a response can be formulated before it's actually

Starlink launched by F9 proves that it can be done in principle, but it would take long enough to deploy that a response can be formulated before it's actually online. The reason Starship is the threat is that the kind of launch capability needed for a mars colonial fleet, and the turnaround times advertised by Musk, mean that such a missile shield could be manufactured in secret and then deployed in a few hours.