Its not a 100% operational issue.
Its a general sense in north American culture of not wanting to take care of your parents in old age by society.
I'm not in agreement with this.
In a culture where both parents work; there simply isn't anyone home to care for an elderly parent no longer capable of independent living.
Many people are also single into their middle aged years and beyond either never having married or having divorced, and face the same issue.
Housing units also aren't large enough for this in many cases. Not everyone has a spare bedroom.
Further, the majority of those in Long Term Care have either serious mental or physical disabilities, or both.
Most homes/condos/apartments are not set up for someone with mobility challenges or who uses a wheelchair.
Indeed many live in rental housing which they couldn't alter if money were no object, as that is a landlord's prerogative.
In the case of my mother I was able to keep her in her apartment after her stroke until near the very end of her life, by insuring she had 22 hours a week of help from PSWs...
By unplugging her stove (she lost her short-term memory and could accidentally start a fire); and could pull it off, only barely, because I lived nearby, and had a job that allowed me to work from home much of the time.
Many people aren't as lucky as I am; and even then it was a real challenge at times.
My father, was paralyzed at the end, and I couldn't lift him.
Those are the folks who end up in LTC more often than not.
To suggest families can simply snap their fingers and deal is profoundly unfair to them and betrays ignorance of how people live.
You could doubtless argue for multi-generational living; but our housing isn't physically conducive to that.
Moreover, you might want to ask Italians living in the Lombardy region about whether that carries its own risks.