Fermion
Give me a museum and I'll fill it. (Picasso) Give me a forum ...
My son-in-law's mother moved to Texas from Georgia to be near her son. She was on a 2 year long wait list for a Section 8 apartment that cost $800/month, plus utilities. She was working at Walmart making about $2 K/month. During those 2 years, she lived with him and my daughter. She was 62 at the time with no savings.
After my wife died last December, I started looking for apartments to see if that was something I wanted to do. Most 55+ apartment complexes here are charging near $2,000/month for a 762 sq.ft. one bedroom.
I am sorry for your loss.
But these people who are moving somewhere to be near a child or friend, they are making a choice. When you run out of money, sometimes you lose the ability to choose.
I would like to have a nice house on Lake Union in Seattle, perhaps with a boat dock in front. I can't afford that, so I don't live there.
I do get that it would be hard to move when you are 80. Perhaps an amendment to the answer of the OP's question would be to notice when you are not quite out of $$ and use the last bits to move to an area that can sustain you when you are truly out of $$.
I feel like he was asking what happens if he spends $10k a month and tosses his broker statements in the trash until one day his checks start bouncing.