Employees also face an enormous propaganda machine constantly telling them unions are bad, they just take your dues, you'll never do better negotiating together, and so on. The usual techie arrogance also plays a role: "Unions benefit common workers, but I am the one uniquely well-paid hard worker that is skilled at negotiaton who would not be advantaged by a union. Therefore unions are useless!" Every tech worker thinks that they alone are the captain of their industry and couldn't possibly benefit from coordinating with everyone else.