They'll still have everything to lose, just much lower spending power. I see it at work, several people in my department know it's coming, haven't done anything to combat the rises and just shrug and accept that it'll cost what it costs. Never underestimate the power of apathy and outright laziness
I've no idea what'll happen, there'll certainly be a lot of complaining after the October cap change the same as there was this April. There was a lot of noise after the April rise but that settled down with in a few weeks*. There might be a big kick off, but I won't be surprised if there isn't.
*I'm talking about the general public, not people in threads like these. One of the girls in the office genuinely asked me "what price rises?" when I mentioned it the other week, she had no idea, her husband pays the bills.