Just want to clarify your point...due to the economy (raising rent, etc), the homeless increase.  I'd like to offer you a different perspective.  As the economy is booming, the homeless could find a job that would propel them to want to get housing and keep that job to support their family.  Yet they seem to cruise under Nimitz or Kakaako living off of free utilities.  Problem 1...being enabled.  
We also have to remember we live on a rock.  There's no land to expand on.  It's not like Montana.  The land we have now is pretty much it.  Unfortunately the gov't allows outside investors to come in and buy up the properties which then increases rent.  Unless we can stop that, the price of housing will continue to increase.  Problem 2...outside/out of country investors buying up property.
Finally I go back to the job situation.  Whether they have a job or not, they're not hustling either.  They're not out there looking for work daily.  Problem 3...lazy!