I'm not sure about this way of looking at it over the long run.   Although things have changed versus what had become the norm in North America in the last few decades of the 20th century, I'm not sure there aren't more parallels with history looking farther back.

People at the turn of the 19th century in Canada primarily lived in rural areas and on farms.   A lot of farms were passed down through generations, and so you can view it as a kind of "intergenerational" support.

When you read novels written in the 18th and 19th centuries, families often lived together, and so, again, ,there was a level of intergenerational support that we have come away from, but now seem to be drifting back towards it, at least in some ways.