Blacklisting is complicated because the web is large. The blacklist would quickly approach gigantic sizes and slow down internet while the ISP is scanning reque

Blacklisting is complicated because the web is large. The blacklist would quickly approach gigantic sizes and slow down internet while the ISP is scanning requests. On the other hand, a whitelist can be much shorter (Facebook, Youtube, Google, that's maybe 50 entries including the CDNs) and simpler (don't pay? not in it.)