This is misleading. The original post was about medical research, which neither in Greece nor in England is any more "socialized" than elsewhere. They might have national health services, but those buy their medicines from the same private actors as any hospital in the United States.
Also note that the original article is specifically not about profit-driven R&D but about a donation-funded, non-profit venture. The (hopeful!) success of such a venture does not really translate well into an argument for private, for-profit medicine R&D.
You could argue that it's the raw capitalistic drive of SV that is uniquely able to generate the wealth necessary for such non-profit ventures, ok, fine (there are also counter arguments to this), but this was not really the point of the original comment.