I fail to see how this solves the problem of the elderly person with a paltry pension that doesn't pay the bills. Unless the "reverse mortgage" mechanism is replaced by

1. valuing the property
   
2. dividing it up into equity shares, initially all owned by the elderly owner
   
3. the "investor" buys equity shares one by one from the pensioner, until the latter dies.

"It's the statue, man, The Statue."