Surprisingly common, just expected that "caring" women will care!
My experience around me is that caring women are getting very firm with their boundaries and that if they have looked after their own parents they are in no rush to do it all again for in laws, simply because their husbands don't fancy it🙄.
Another friend told her husband to crack on and pay for carers/cleaners etc., if he didn't want to clean his parents house and do shopping but she hadn't a notion of spending her Saturdays doing it.
So many men are so fundamentally selfish, they know well what is involved in doing appointments, shopping, laundry and cleaning etc., they simply don't want to.
There have been more than one very straight talking discussions removing any "confusion" they might have had as to exactly whose responsibility it is.
Another friend of mine is married to a man with two sister in laws living abroad whom thought they could dictate her summer when it looked like caring duties were going to be required for their parents and her husband was travelling for work.
She promptly decamped to her parents for the whole summer and left her husband to it, muting her SIL's for the entire time.
Thr two of them actually thought her marriage to their brother meant she was now to be told how she could spend her summer.
They got a huge surprise and she has fully refused to be in any way involved.
Her husband travelling with work meant she was busy enough.
She was mightily pissed off at the high handed nature of the way they spoke to her and her husband got it with both barrels.
Her inlaws have plenty of money and will have to pay for caring duties if their daughters aren't around, not foisted it on their DIL whom they have a polite, but not warm relationship with.
These soft duties of appointments, shopping, helping with house work could go on for years.
There was no way she was entertaining it at all.