Starlink should not just be nationalized but internationalized.
It is internet for everyone on earth, not everyone in the USA.
Every larger nation deploying their own constellation would be a pointless waste of resources, and every smaller nation having to find reliable partner-nations to tap into for that internet access would inevitably lead to people ending up without access due to political games.
Low orbit satellite constellations are the perfect candidate for sharing, they would literally sit unused over most of their orbits otherwise.