Yes, I really feel for the younger generations of displaced Londoners. New Labour were just as much to blame for not balancing policy as Conservative governments were and it has horrible consequences for some.
The major issue (as it's being going on for several decades) is it's not just young Londoners.
It's affected huge numbers of lower income including many disabled older Londoners - people in their 40s, 50s, and beyond. And they are the very worst off. Partly because, unlike the young, they don't have time on their side - to hope for a change in policy and/or their personal circumstances/health.
But also because they are so often invisible. It's mainly the young affected in other parts of the country and people assume it's the same in London. If people aren't aware of their situation, of their (miserable) existence, then definitely nothing will ever be done to improve things. For example earlier taxpayer funded inflate the bubble schemes like Help to Buy give tax money to developers to put up shoddily constructed overpriced new builds were restricted to under 40s. Understandable to an extent because it's easier to get a mortgage under 40 (although the retirement age has risen) but no alternative help was given to the unfortunate homeless or insecurely/poorly housed over 40s.
the young native Londoner renters moving out to rent or buy somewhere affordable have very little and they still get the same resentment aimed at them that the ex-Londoners with £££££s get.
Adding insult to injury is that many of the 'Londoners' with £££££ are not Londoners, but people from across the UK who moved to London to take advantage of it before moving on elsewhere when they've had their fill.
Worst off than young London born Londoners are the older ones. It's easier to adapt to change in your youth, and often easier to fit in - meeting new people through work, university, new partners.
It's a time of life before you settle - when it's not uncommon to move around to new places.
Pity the older and disabled Londoners. They're they ones who have really suffered from governments since Blair 'investing' in London.