Facebook cannot win this. If not ABP, it'll be a browser extension or something else. Fundamentally, they're bringing in something users are against, and hence

Facebook cannot win this. If not ABP, it'll be a browser extension or something else. Fundamentally, they're bringing in something users are against, and hence will take any easy action against. The hard part is the 'easy action'. Installing ABP is pretty easy. If that does not work, and "FB ad block" extension is the easy thing to do, that will be installed. Sooner or later.