When an elder has no friends, relatives or finances, where can they turn for a POA?

There are many indigent (some homeless) elders. I am curious if there are programs in place that will advocate for these elders pro bono. I have not found a group or program that offers this type of (much needed) assistance. Any thoughts, direction, or advice is appreciated. I realize that a guardian may be appointed without a POA in place, but this is both time consuming and costly and potentially becomes a burden when the elder, or his/her estate should the elder pass, is unable to pay the high costs associated with court appointed guardianship.