If you block using a hosts file, the ads will be requested from an IP address, thus skipping a DNS lookup.
If certain IP addresses start getting blocked, they'll move to IPv6 and have an infinite dynamic supply, which are randomly picked as the web page is served.
It is an arms race.
Also: advertising ruins every medium it ever touches. There is no self policing or sense of restraint or any line that could be crossed leading to a feeling of shame.
It is an arms race but its worse that the progression you listed. Since the easy solution to ipv6 hosted ads is to just block ipv6 (plus anyone without ipv6 wouldn't see the ads), they just randomly generate div elements with random names making it impossible to distinquish the ads from real content.
If you block using a hosts file, the ads will be requested from an IP address, thus skipping a DNS lookup.
If certain IP addresses start getting blocked, they'll move to IPv6 and have an infinite dynamic supply, which are randomly picked as the web page is served.
It is an arms race.
Also: advertising ruins every medium it ever touches. There is no self policing or sense of restraint or any line that could be crossed leading to a feeling of shame.