Stross anticipated this too:
> Granting individuals enormous leverage can sometimes be socially useful. But before you point at Musk and Tesla or SpaceX, I need to remind you that he didn't found Tesla, he merely bought into it then took over: SpaceX's focus on reusability is good, but we had reusable space launchers before—the only really new angle is that it's a cost-reduction measure. Starlink isn't an original, it's merely a modern, bigger, faster version of 1990's Teledesic (which fell victim to over-ambitious technology goals and the dot-com bust). Meanwhile, billionaires can do immense damage: the Koch network has largely bankrolled climate change denial, Musk's Mars colony plan is fatally flawed, and so on.
You say "better" results than the government... but it's not obvious that a government can't make these marginal improvements... you just assert that "these words are basically wrong".
As I said, the article is very questionable - and not because billionaires couldn't use some healthy attention, just because too many statements in the article are doubtful.
Of course there are also arguments to the contrary - e.g. Apollo project was rather effective, large military operations like working during WW2 shows government can actually be quite efficient etc. That doesn't matter though, we only need to point to an example - let it be SpaceX - when a billionaire shows better results than the government.