And which ones, bar building housing, should that be?
Locking them up for the crime of not being able to afford a home (or being judged too unworthy of credit by three ultra-large black box corporations) is inhumane and costs the government way more than just giving them outright cash.
Locking them up in mental wards has the same issues and there's a reason involuntary commitment fell out of favour - it's ripe for abuse.
And driving them off via whatever measures just shifts the problem elsewhere.