The entire purpose of an open Internet
That is to say, we may be headed toward nationalized technology stacks that don't interoperate and nationalized supply chains. This defeats the entire purpose of an open internet.
Huh? The open Internet (upper case please) is a result of open standards. Nationalised technology stacks can use open standards.
The threats to the open Internet are entirely political (cf. the Great Firewall of China, the UK pornography thing, etc.).