Can't ISPs just reset everyone's ip home and residential address aided by ICANN

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self.Bitcoin12d ago
What's stopping Bitcoin from being banned, if not disturbed. Hear me out. ISPs in unison around the world can just mess around with the IP addresses without prior notice to residential and enterprise networks and even block major ports used by Bitcoin using Deep Packet Inspection (DPI). Since nodes only know other nodes by IP addresses and port, does my scenario makes bitcoin nodes hard to find each other hence fork left, right and centre. Explain to me.