I agree with Kerry, Facebook deserves to be shut down, although not because of ads. They have spied on too many people for too long. Many of Facebook's activities should be illegal, and any companies who do them should be punished severely. I would recommend having the CEOs sent to prison (for once). But, that's not likely to happen. Between cyber-stalking, censorship, automatic psychological profiling, and psychological manipulation, I think the would world would be a better place if people refused to use such anti-freedom services.
Anyway, Facebook hasn't been known for listening to what people say. They're probably even more deaf to their customers' wishes then Microsoft. Heck, their "real name" policy (or "actual name", or... whatever it's called now) is an excellent example of their resistance to do what their users want them to do.
Anyway, to get back on topic, Facebook will never manage to use technical means to block ads altogether. They will huff and puff, but they'll never blow that brick house down. After all, the developers of ad blockers will simply modify their blocking lists to counter the changes made by Facebook. However, given the influence big companies like Facebook have over lawmakers, I can guarantee Facebook will soon have jackhammers and wrecking balls at their disposal. It's only a matter of time.