

Ideas can only be patented, not copyrighted. If a company designs something novel enough to qualify for a patent, and so good that people willingly pay for the feature, that’s impressive, and arguably still a good thing. If instead they design a better user experience, or an improvement in performance, the ideas can be used in open source, even when the code cannot be.
1970 was during the cultural revolution. In that year, the world population was 3.68 billion, and the population if China was just shy of 830 million - China had 22% of the world’s population, so if they held (only) 20% of the world’s prisoners, they’d have a lower than average incarceration rate.
The same is not true for the US today, we have less than 5% of the world’s population today.