I don't understand why the choice of opensourcing seems to be so binary for some. It feels as if it's either: A-Leave everything open and hope that the global

I don't understand why the choice of opensourcing seems to be so binary for some. It feels as if it's either: A-Leave everything open and hope that the global interoperability and cathartic flow of information creates a magic utopia for humanity. B-Everyone incorporates into the soviet-union/chinese-firewall for protection. There are manageable, more analogue alternatives too, like reducing the risk and probability of a disaster by trusting a human's judgement to limit access to potentially malicious code; which is exactly what they're doing in this case.