The impression I got from the ones I've been involved with - distant relatives who hadn't had children or elderly family friends who had been denied permission to marry so they could care for their own parents and therefore never had their own children - was that they were much more organised and on the ball about it as they didn't expect someone else to do it for them.
So decluttered, got wills and POA in place, had set up accounts with taxi companies and/or moved somewhere sensible near amenities before they had to stop driving, researched care homes and chose to move into one before they deteriorated too much type stuff.
Although the key thing there is 'professional' women, they'd usually been teachers or similar, had inherited from the parents they'd cared for, had decent final salary pensions and could afford to make choices about where they lived and care homes.