just imagine a world without the US acting as the world police, you'd be seeing armed conflicts in middle east, Africa, South East Asia, even in Europe and North East Asia. that would make China extremely hard to extract 1 trillion USD trade surplus a year, which is now required for China to maintain employment back at home.

without the US, even for a relatively stable global environment, trade won't be possible as most countries are not capable of providing goods and services wanted by China. Their currencies are literally junk (including Japanese Yen and Euro), Chinese are not going to take those junk in exchange for real goods. Trade is now possible because, by one way or another, those countries have USD to pay. those USD are backed by 300+ million highly productive Americans who repeatedly proved that they can create values in the scale of dozens of trillions a year.

the best part of this whole thing - America is singlehandedly footing the whole bill to provide such trade friendly environment for China for FREE. this is not cold war v2, back in the days of cold war, the US didn't help USSR to such extreme extent.

that is one of the major reasons why companies there won't be open - they know full well that anything made publicly available would be cloned/copied within days.

it is not only a part of the competition common in all countries, there are unique reasons in China - millions of graduate engineers join workforce every single year, there are not that many projects they can work on. starting copying & cloning some existing stuff even at someone's own cost is a pretty effective way to get into the game.

> Ready access to media, yes, but also scientific papers, books, etc.

There is this old Chinese saying "Teach your apprentice and your own ruin follows" (教会徒弟饿死师傅), that has been telling a completely different story for thousands of years. When they don't even want to hand over tech know-hows to their own apprentice, why would anyone be expecting them to have the desire to share it publicly?