Why is it NOT a protection only government’s responsibility to force landlords who rent living spaces to provide the basic needs such as heat, running water, and proper garbage disposal?

Twelve Visions Party’s Statement: …Rental properties are products in a free enterprise entrepreneurial business.  If the landlord/owner does not provide the best living quarters, there will be no renters to pay for the business’ mortgage.  There is no reason to live in substandard environments and pay to do it.  The tenant is free to move.  There would be no need for laws for rental agreements/contract, however, a broken contract by the landlord would be handled in a fully honest justice system.