"It is more expensive to jail and warehouse the homeless in workhouses and asylums than to house them."
The cruelty and flexing of power and mockery of other people "deservingly" suffering more than others deemed more human is worth the additional cost; and what's wrong with creating more jobs as overseers & torturers, using marginalized people as your personal stepping stone to success and riches, and separating the "strong" from the "weak"?