Btw wealthy people and families also experience child abuse and child neglect, domestic violence, disability, and need for elderly, disabled, and SEN care, community transport etc.
And, sometimes - especially with child abuse/neglect and with DV, the household income might be a lot but the person or family in need of support won't have access to money.
Also, ending postcode lottery access and quality of provision doesn't necessarily mean every area needs exactly the same amount of money spent on each service. As long as there's enough provision for everyone in need (including perhaps hidden poor or vulnerable).
And some areas will always be "naicer" and more expensive than others. Many people won't afford to live in a Jeremy Clarkson Farm chocolate box rural Cotswolds village. That's not the issue though.
The main issue is that every area - and every individual and family wherever they live in the UK - should have sufficient provision of good quality essential services, and this shouldn't be a postcode lottery.
Separate from essential services and infrastructure, I guess it's at each local council's discretion, with local feedback, what to prioritise for local spending on non-essential but nice to have facilities and services.