It's very difficult. As a child elderly relatives live with us, and moderate caring responsibilities were dealt with in family. I would always imagine that I would have done part on that
I now don't think that's possible for lots of people and for me that's predominantly due to house prices.
I can't see a time in which me and my partner aren't both needed to work full time for our mortgage.
I don't live near my parents (1hr + away) to be able to do quick house calls most days, because I can't afford a house in that area (it's a normal area but just south east).
I also don't have the space in my house, at this point we can't find a house within our budget with a downstairs loo so if my parents or inlaws age the way their parents have they won't even be able to visit us, let alone stay.
When my grandparents were unwell less than 20 years, my parents had a bug enough house, down stairs loos etc, my in-laws remortgaged to build an extension (we are unlikely to have that much equity in houses), both had flexibility to work less. My in-laws are in their seventies when I'm not yet 30 and at the complete bottom of the housing ladder. Grand parents having children older means that those children are more likely to be in a less financially secure position, still building careers or having very young children them selves. Caring in your 50s looks very different from caring in your 30s
In q previous role I had a professional interest in design for aging population. The housing that allows for healthy aging isn't being built much anymore, look at how few bungalows there are.
We advised new build companies to no avail. Increasingly with space at a premium, rooms are smaller, things like bath seats, toilet frames, profiling beds no longer fit in rooms. Downstairs toilets are common, but they are tiny so rails etc don't tend to fit, and they tend to be unusable for frailty.
Historically people used to leave major hospitals after ops etc and be set up in one room, eg a bedroom with a special bed, frame, komode but now the rooms don't allow for that. Things like dining rooms that were often hastily converted as they are on the ground floor, but now complete open plan is common to the extent the kitchen, lounge has zero walls, dining rooms a thing of the past and this means relatives can no longer take family members in. Even things like stairs are often built now with turns in which is an absolute nightmare if you're trying to fit a stair lift (bumps the price up massively too!)
In some ways it's like we have forgotten that people age, no longer design things like houses and access for that (which would keep people in their homes longer and reduce care bills), but also very little of society is designed to let kids meet parents aging needs