Dh parents did this.
Slightly different situation as MIL was born in the country they moved to and is fluent in language (she lived in the UK from the age of 3, but her parents kept the family home for holidays, which MIL inherited and now lives in).
They moved 10 years ago at 68 and 70, it was all “we’d never expect our children to look after us in old age.”
Only, yes, they do. SIL is flying out again tomorrow as FIL had a hip replacement. Dh has had to go out a few times a year as well. They lay it on thick that while they have family over there, they can’t help as they are all getting old too, SIL and dh feel so guilty and can’t say no.
None of us have had a family holiday in years as SIL and dh use up all their holidays from work going over to sort issues out with the house and their health, families can’t go as there is no room for us and it’s quite an expensive place to stay and where they are is quite rural and not a tourist part anyway, so places to stay are expensive and limited.
They didn’t mean it when they said they didn’t expect their children to care for them.
It was hard enough with my dad who had dementia down the road in a care home, PIL are a 3 hour flight and then a 2 hour drive from the closest airport away.
They can’t move back easily as they sold their home here and the economy of the country they moved to isn’t great anymore and no one wants to buy MILs family home in the middle of nowhere, half the homes in the village have been up for sale for years.