That is already happening at scale

That's definitely the plan, and they'll be using private, for-profit prison companies. One is a facility in Louisiana that has been closed twice due to abuse and torture of inmates, and has been reopened as an ICE facility they've been stashing the students arrested for pro-Palestinian protests there. The Columbia student who just got released was being held there.

They are also building a 30,000 bed facility at Guantanamo Bay. The $250 million dollar contract has been awarded, and it's underway. For context, the average maximum security prison hold 800-1200 people, with the largest in Angola, LA holding about 8400. So this new facility is nearly 4 times larger than the largest prison, which is already several times larger than average. Clearly, they intend to house MANY people there.

It's my belief that they will eventually take the position that if you can't stay actively employed (due to AI, robotics, automation, discrimination, etc.) and require the help of the government to survive, then they will house and feed you in exchange for renting you out as slave labor. That way, they can say they solved the homeless problems, even though all they did was turn them into slaves.

And the MAGA followers will go along with it, happy that the "parasites" are being forced to work. Besides, they've been hoping for slavery to return since 1865. The only legal slavery in America is prison labor, and like MAGA always does, they intend to exploit the shit out of that Amendment.