You misunderstand what "the internet" is. "The internet" is a process and methodology for connectivity between LANs. And 48 addressing bits is more than enough

You misunderstand what "the internet" is. "The internet" is a process and methodology for connectivity between LANs. And 48 addressing bits is more than enough to solve this problem. TCP/IP is full of cruft and causes a shitload of unnecessary problems, but increasing the number of bits in the addressing space solves literally none of them.