A few guys getting paid a small fraction of their worth doesn't mean that they're 'paid' developers.
Haven't I been over with you on this topic many times before?
I suppose I could mail a $1 bill to all F/OSS developers, and the entire community, under your definition, would be 'paid'.
Of course, we both would acknowledge the absurdity of that. So why don't you acknowledge the absurdity of these kernel guys who provide literally millions of dollars worth of value to F/OSS and only get "paid" $50-$150k/year in most instances, if even.
I wish I could name some big, brand-name F/OSS developers I know of, that put up webpages describing their personal lives, with pictures of their houses, blogs, etc., that describe how, despite providing software that literally powers the Internet, they basically eke out a living and have to worry about mundane things like car maintenance, and whether they can afford a Saab or whether they should stick with an off-lease Dodge. I don't think it would be very professional though to do so, so I will refrain, but if you ever attend an open source conference, you will distinctly note the lack of extravagance.
In ther words, the devil is in the details buddy. Better questions to ask is how much they are paid. Of course, engineers are usually terrible arbitrers of the value of their own skills, so they often accept far less than their worth as compensation.
