All around me are families I know with lots of grandparent contact.
Are people in their 20s-40s with kids less likely to see grandparents now?
Maybe...
I think compared to 30 years ago, more of us live in families where both parents work - often both FT. So there simply aren't as many hours to spend with other family members.
Also we're more likely to have moved away - changing economics, rising numbers at uni, house prices forcing distance. So it's more of a time effort to get to grandparents.
For many, there's more disposable income and I think FAR more out of school activities (so much franchised stuff that didn't exist when I was a kid) so many children to have more activities to go to. And re my point about working parents - that means we're already cramming them in on weekends.
So I think we probably do have less time for grandparents now - but still the deciding factor is the quality of the grandparent and changing attitudes to "duty".
Last year, my friends and I took our children and their grandmothers to a London show for a treat.
3 grandmothers were massively engaged with the kids. I brought MIL. Who sat there like she was chewing on a wasp, and didn't talk to my daughter at all. She hasn't got a maternal bone in her body. And she's not particularly nice. I still invite her... to be nice... but my sense of kindness (and it's kindness not duty, really) only extends to high days and holidays. I am not duty-bound to provide a social life for a woman who isn't very nice and just makes the occasion less good for me.
There will be selfish children, yes. But bottom line - you reap what you sew and I expect a good number of isolated grandparents simply weren't good parents and grandparents.