[neura]

Do not the small developers benefit from open source? Startups that are not making money, even? Personal projects, etc.

The difference between the food bank and this is that food cannot be consumed by everybody, all at once. It's near impossible to make "free" software that cannot be used by companies that are profitable. Who would police "profitability" when there's no money involved? The best you can hope for is to prevent a profitable company from using your code. Chances are, if the code is useful enough, someone else will write something similar without the same restriction.

My take: If you're writing FOSS, you know what you're getting into. If you need the money to do it, you should plan for that.