South Korea managed to spin a system where they can test 20k people a day in just over two weeks[1]. What's stopping other countries from doing that? [1] https

South Korea managed to spin a system where they can test 20k people a day in just over two weeks[1]. What's stopping other countries from doing that? [1] https://www.bbc.co.uk/news/world-asia-51836898 https://www.bbc.co.uk/news/world-asia-51836898