[sidlls]

From what I can see, in tech, it's because they fear a union will bring them down as the cost of lifting sub-par developers up. They mistakenly think that because relative to other workers they are paid and treated well that the qualifier "relative to other workers" is irrelevant. The reality is different, of course, but they're too busy looking down from their rock at everyone else to notice the mountain the owners are towering over them on.