On a serious note, it's not surprising that A&F and other similar stores want to move into Savile Row; the rents are astronomical, making it very hard for the more traditional houses to maintain a presence. But the address' historical cachet is very appealing to large international brands that can afford those rents. This pressure has the effect of pushing bespoke suit prices at the older houses up every year, by more than inflation, which is a bit annoying.
By the way, I'd be willing to bet that at least 2/3rds of the suits people in the crowd are wearing in the pic aren't bespoke (or at least, not for the people currently wearing them), and many are just costumes from what I can see, so what they're protesting about escapes me on one level...
... and on another level, if all the traditional tailors moved to a less expensive address (which, in fact, was part of the historic reason that Savile Row became a tailoring centre in the first place IIRC), the annual price rises might be mitigated a bit, which on a personal level, would be no bad thing. So put me in the "mixed feelings" camp when it comes to A&F on Savile Row.