I agree the title and wording in the article is not very specific. However, I think it's mostly just the general point that Stallman makes about free software

I agree the title and wording in the article is not very specific. However, I think it's mostly just the general point that Stallman makes about free software (the 'prediction' is just that this is important). At the risk of hypothesizing how this point is relevant: freedom to modify software is an inalienable right, which increases the chances of people not taking advantage of other people with technology. Not in any absolute sense (it only increases the chances). But it just makes coming up with solutions to centralized, non-democratic uses of technology (SOPA, etc.) a lot more easy.