Am I the only one worried about how suspiciously free all of this is?

Like the movies always say, there ain't no such thing as a free lunch. Who runs these websites and do they do it out of the goodness of their hearts? Does this relate in any way to the Napster/KaZaA debacle of '03? How does anyone muster up any motivation to work on Linux? Who clicks on those Google ads anyway? Should I get Firefox? Is my soul being slowly drained into my computer as payment?