The best alternatives to most corporations are worker cooperatives. Anarchist communes have implemented this in past during Spanish civil wars etc. Modern day equivalents are things like REI.

Do these things go to moon as well?

The assumption of 317,000 usd per home does not hold. Thats a very suburbian thought of ending homelessness. Its possible to build multi storey buildings housing more than 100-200 at roughly 20-36 million usd assuming units to be like a hotel room. For a million people, the number would be ~70 billion. If we move away from the hotel rooms to a bunk bed(like traditional homeless shelters usually are), the number would come down drastically to something like 21 billion. Its possible to end homelessness with the budget for jailing people. Its a choice,

45 billion can eliminate homelessness in US. This is blatant corruption.

https://archive.ph/xYuVB the archived link for anybody who wants to read it.