Nail on the head. The richer have got richer (and no I don't restrict that to millionaires, my threshold is far lower and would include "normal" people who maybe bought their homes 30 years ago, established in their careers, looking for early retirement with good incomes, etc). The poor have got poorer, by which I typically mean young workers who are typically on low wages but have to pay massively increased rents (if they can even find somewhere to rent), plus all the other costs of living and usually get little, if any, benefits, when they don't have children. We've certainly got a "squeezed middle" when others have largely been sheltered due to benefit rises being higher than wage rises!
Lots of people have lots of disposable income. But also ever increasing numbers are basically living hand to mouth with no prospects of that changing any time soon.
That's how we can have people paying hundreds of pounds over face value to go to an Oasis concert at the same time, we have young professional workers having to live in shared houses, basically low quality bed sits, who can't afford to even go out to a pub quiz every week!
What with population increase, more and more houses "lost" to the temporary university students or holiday lets, the repercussions of the Ukraine War (cost increases in food and power), repercussions of the Covid lockdown (tens of billions paid to people to sit on their arses doing nothing), all of which as we were just coming out of the ten years of recovery of the 2008 crash (most economists back then said it would take 10 years of virtual stagnation to recover, and it proved true).
The last 25 years since turn of the century is proving the pivotal point between the economic successes for the Western World of the 20th century and we're now in managed decline, again throughout the Western World, which is the inevitable consequence of the industrial power houses being moved to the East and our utter dependence on other countries to supply and make things for us, goods, services, power, etc., where out economy farts around with making posh coffees in the heralded new "service" industry!
We need to get accustomed to the end of the "good life" that we've enjoyed for the past 50-60 years. It ain't coming back, and the last few years are the "new normal", in fact, things WILL continue to get worse.