This is my experience too, I don't know why they don't do IP level blocks. It's pretty trivial to evade a lot of bans.

I think the Spain-Cloudflare case does IP level blocks and it has a lot of side effect damage, but if I recall they do IP-block level blocking because the vendor, cloudflare, provides header/envelope encryption and pooling, so the Spanish courts considers it legal to block the whole service even, alleging that they are not collaborating with court orders, they just choose not to block the whole provider to reduce the collateral damage, even if they consider they have jurisdiction to block all of CF