FYI
Being a proponent of “open source” isn’t an excuse for not buying anything, and vice versa. Not buying anything just means you’re frugal, a cheapskate, and/or a copyright infringer, depending on context. (Some cheapskates do gravitate to free and open source software, but that doesn’t make them proponents of the respective philosophies. It just means they’re cheap.)
Usually I don’t care about random misconceptions on the Web, but a lot of people (including people I know) get this wrong. So there you go.