Both sets of my Grandparents had their elderly parents living with them at different times when they could no longer live alone. My Mum looked after Dad's Mum & the her Mum again when they were too old to live alone. Both their husband's had died 1st so they were alone. Hubby's grandparents were looked after by their family too. It is nothing new & the only reason it stopped was because society changed.
Now you can shout me down for the next statement, but I'm not worried! If you look back to both the old & new testaments in the bible, it was normal to have extended family living under one roof. When a woman was a widow & had no children to care for her, church members took her in to care for her in old age. It was normal to have one's parents & perhaps grandparents under one roof - as recently as the last century too. It's people who have changed. Our entire lives have changed. Back then it was normal for women to be homemakers & when the children were going to school or perhaps married & left, the older grandparents filled their gap in the house. It's so different that now we all live separate lives, in far off towns, with busy lives. So this isn't the 1st generation at care at home. Nothing new under the sun.