Person 1 doesn't have to be in poverty, in most developed countries there would be disability help/insurance/payments/etc. to help them live a non-impoverished life because they cannot realistically work a job.
In most developed countries, disability payments mean living in significant, often crippling poverty.
Here in Canada, a single disabled person that is expected to live independently receives about 800 USD per month from the government. Out of that, they're expected to pay all their expenses. Canada is relatively typical as such things go. In France or Germany it's about 1000 USD a month. It's about 900 USD in the United States. It's only some 300 - 500 USD in the UK.
Depending on jurisdiction, there may or may not be subsidized housing which can make a big difference; but either way, many are paying market rate for housing. There are also other benefits, etc., that may alter the picture. But the overall picture is very very poor. The Scandinavian countries are the only major exception I can think of, where the disabled living only on a government pension might not actually be in poverty.
Yeah people Canada have been wondering where this explosion of homelessness has come from, well, when you look at the amounts that minimum income provides, in an environment of exploding rents, it's state sanctioned poverty.
