Regarding the new conversation topic: some open source software does have revenue. Forms of revenue include: donations, selling support, selling licenses that are less restrictive than the original open source license, ads, and selling addons. Yes, revenue for open source software is generally less than for-profit software, and despite that the open source software is often higher quality. I didn't claim that a higher quality product will always have more revenue than a lower quality product. I just made a claim about where the money goes.