Here is an idea I think would work. Might sound like socialism; but it would be voluntary.

I don't know if every state has billionaires. But they probably have people in the hundreds of millions of dollars range.

For this example; I will use Texas. Elon Musk could pay to get the homeless off the street in exchange for being tax free. If he got someone to join him; his expenses would only be half and that person could be tax free. A large group of people and their expense wouldn't be so much.

So if that were reality; how would the money get these people off the streets?