We can all have static IPs, but if you fragment the space too heavily (e.g. your home having an adjacent address as someone else on the other side of the country / world), no AS will want to carry your traffic. It's simply not feasibly to carry traffic to tiny prefixes that big giant routers can't handle in a few TCAM entries. This is kinda why we have IP in the first place (instead of no L3 at all).

This is also similar to the old way the phone system used to work. If you move across the country now, you can keep your cell number no problem (and maybe even landline too?), but in the Bell monopoly days, you most certainly could not move out of an area code and keep your number, as the number itself reflect some sort of hierarchical structure of the network. There may have even been further restrictions on the number prefix (XXX in XXX-YYYY), but I don't know that for sure.