There is conclusive evidence that holds for all industries, regardless of their type, size, or age. The results are the same. If you don't believe me, look at the numbers. There is a lot of turnover in Silicon Valley, because there are so many toxic workplaces in Silicon Valley. These are companies that create the conditions that they deplore.
Loyalty is dead.
Start with the interviewing and recruiting process. The company asks the employee to sign an at-will employment contract that gives the company the right to fire the person at any time and for any reason. A place where people come to work to get rich enough to quit. David Russo, the head of human resources for SAS Institute, gave a talk to my class. My students were dumfounded to learn that this successful software-development company doesn't offer its people stock options.