There might be a correlation between effective workers and large companies. A person who is willing to memorize "Cracking the Coding Interview" is the type of p

There might be a correlation between effective workers and large companies. A person who is willing to memorize "Cracking the Coding Interview" is the type of person who has his or her life on guided rails and would prefer the upper middle class of a large company rather than the scrappiness of a smaller company which results in poor/rich. Chinese culture especially has a long history of exam guided lives dating to ancient dynasties. Stereotypical desired professions like lawyers and doctors are also very credential-gated and similar. So small companies are left with a much smaller pool of candidates, often less credentialed and much stronger willed. They cannot grow a workforce of highly credentialed/technical workers who do what they are told. Are there mavericks who are also very technical out of passion rather than trying to oull their families out of poverty? Yes. But they usually aren't willing to play second fiddle.