The same way laws against online piracy are enforced: attack the infrastructure. AdBlock Plus is being attacked right now. If distributing this software is made illegal, all blockers will vanish from the addon stores, and only very tech savvy users will have palatable Internet.
lxgr|6 months ago
On Android, the situation is slightly better, since browsers can be sideloaded, but ad blockers would quickly become a niche phenomenon.
3036e4|6 months ago
https://en.wikipedia.org/wiki/Web_Environment_Integrity
the8472|6 months ago
The spirits that I called...