My guess on this is it's yet another consequence of being privately interconnected. A few decades ago, you could motivate someone by claiming there are people s

My guess on this is it's yet another consequence of being privately interconnected. A few decades ago, you could motivate someone by claiming there are people somewhere in the company being much more productive and cover your tracks by saying it's rude to ask your other coworkers. Now, you have other people to ask besides your coworkers and ways to easily organize your coworkers outside of work. It's no coincidence that the groups that are unionizing are generally more tech-savvy (young workers in retail, Apple, Amazon)