Technically killing Bitcoin is possible, this could be achieved by simply forcing ISPs to block the 8332 port, this will kill Bitcoin, even if you would change the port this would create two forks and confusion and incompatibility between the new and old software.... it would be a whole mess and the end of Bitcoin as you know it.
blocked... and full node!!! I will assume that you don't know what you are talking about.
You can buy a static IP and have the port open on your host.
Edit: where will you buy it from? what part of force ISP don't you understand ?
I think you don't understand what this would require either.