I didn't suggest you were saying those things generated income. I only pointed out that apartments today require your monthly income to be 3X the rent.
Rent is outrageous today, and in California, where this man is staying, housing costs are even higher.
Yes, some people lose everything to addiction. But, this man hints that he's homeless by choice to bring attention to his story. It sounds like he moved to California from a state with a lower cost of living.
Regardless, anyone can lose everything in a flash. A lifetime of hard work can go quickly (even without substance abuse or mental illness). This guy claims he put his life savings into the patent and lost money in legal fees, and he lost his business and his house. It can happen.