The Internet was designed to be somewhat decentralized. Some administrative aspects are centralized, like public IP address allocation, Top Level Domains, and common TCP/UDP port assignments for essential services. But the operational aspects are very decentralized. When an organization wants to connect directly to the Internet, they “just” need to connect with sufficient bandwidth, and then start broadcasting the IP address ranges they are assigned, and the routing protocols figure it all out. If all you want is a private Internet, you can even dispense with the routing protocols and set up static routes yourself, although that won’t scale up.
No matter what happens in the world, there will always be an Internet, as long as the equipment exists and there are enough furries to run it.
What makes you think it won’t happen? They have the votes for it.