Scouse, I think you're missing the point slightly. I think what they're saying is that yes, the protest achieved it's aim, and was therefore a success. You did what you had to do to get the outcome you wanted, and you got it, which is excellent, and you should be happy. As a Liverpool fan myself I think it was absolutely the right thing to do.
However, there is also the possibility that, whilst you are delighted with the result, so too are FSG. It's entirely possible - and depending on how cynical you are, even probable or closer to certain - that they are just as pleased with the outcome as you are. Thinking from their perspective, the price increase could have gone one of two ways. Either it is accepted and they make more money, or it's protested, and they return the prices to the same level they were, and the fans are happy. Before the proposed price increase, would you have considered the 59 pound tickets exorbitant? Because from all the celebrating, that price is now being treated as a win for the fans, and therefore, they've successfully increased the "acceptable price" threshold.
I've seen actual studies on things like this. A simple example is a merchant selling something - let's say footballs - for $20. Sales are average, and plenty think they're overpriced. So the merchant increases the price to $30, and then reduces it to $24, advertising it as 20% off. Sales are much higher, even though the price is actually higher for the same product. As I say, studies have been done on this kind of thing. As long as the merchant can make the people believe that they are getting a good deal, their consumers will be happy, and will continue to buy.
You can draw a parallel here. People were unhappy with the 59 pound price, from what I gather. So they raise it to 77, spark outrage, reduce it to 59 again, and suddenly everyone is happy, because they've seen how it could be worse.
All this isn't saying the protest was futile or that you shouldn't be proud of it. You should. Just be wary because FSG could so easily be the winners here as well.