I don't think so, it is surely within ISP's capabilities to log who had which dynamic IP at what time, and it is known that the government wants this data to be

I don't think so, it is surely within ISP's capabilities to log who had which dynamic IP at what time, and it is known that the government wants this data to be stored and available for it's own use. I've seen an article here linked yesterday where the EU will make it mandatory for WiFi networks to use password authentication. So when you say how about people that have dynamic IP's or how about people that only access public WiFi networks the government will always find a solution by passing a law that restricts access to those who have authenticated (and therefore made themselves trackable in some way) These restrictions are never implemented for your own safety but instead they claim it is for the safety of the businesses providing these services. How is it for the safety of these businesses? It's because the government implements a framework which makes ISP's and public WiFi network providers liable for damages caused by their users. So the government has a problem in its never ending quest for more power caused by people doing stuff they don't want them to do (and frankly, in the case of the Internet it is by nature very often exchange of some kind of information or knowledge) so they create liability issues for businesses that enable their users to do these things.