Maybe they might then learn something ?
You started this thread asking about "protest". Well I'm not protesting about a minor increase, because I spend pretty much zero apart from my tickets, why ? Because I value my money, and spend it effectively, I moved from 212 when the SS3 was built, as I knew they would price me out of 212, 4 of us scattered around other expensive areas, all got seats together, we now have a far better view for (still) £200 less than we were paying that previous season, 4 of us sit together, and if one of us can't go, we can easily move a ticket on in our own group of friends, and for most games its a good atmosphere, not far from the away fans.
Loving it, and I have absolutely no reason to "protest", but I'm not held hostage to City by paying through the nose for shite, I actually pay a reasonable price for the best football in the world right now, and I made my own choices to do that.