[onion2k]

Each of your examples is headed by an individual who's both passionate about openness in their respective domain and who has a source of income that's made them rich enough not to really need to sell out (or by groups of people who don't need to in the case of P2P and OSS).

Even if you could find someone who fits the bill though, each of the examples is either irrelevant to the government or too small to have a significant impact on what the government do. I strongly suspect that any ethical Facebook alternative would find it very hard to operate if it got big enough to complete with FB and still refused to sell out.