[methodology]

Not very long because I'd be bored and run down from not having any important work to do. Also, social isolation would be a problem.

[outericky]

All he asked was if the income stopped. He didn't suggest not working (important work can yield 0 income too...). Nor did he suggest social isolation.

[methodology]

If it's important someone will pay you for it. This is even more true in today's crowdfunding era with kickstarter and co.