What I find amazing about this is how they could make such big technical advances leading to such big cost reductions by essentially being unencumbered by burea

What I find amazing about this is how they could make such big technical advances leading to such big cost reductions by essentially being unencumbered by bureaucracy and bad incentive structures. (And that's of course not to deny their hard work and smarts - I'm really impressed by what they've done). I suppose it shouldn't be a surprise, but it's still hard to avoid naively thinking that surely there had been technical challenges holding up the technological progress in those areas for so long.