1) Uber drivers by responding to pickups.
2) Uber customers by requesting those pickups.
3) Uber the company by facilitating those pickups.
I am not sure we can claim high moral ground and label (3) immoral while staying oblivious to (1) and (2).
Now that the labor occupies a much less central place in our society, these common norms and knowledge have been lost. I happen to be appalled by this because of my own political views, but good or bad it's certainly a sign of the times.
>these common norms
Common to union supporters.
Also, abusing a unions' power to make a political statement rather than fight for the workers' rights is only weakening the union further. It's now less of a self defense mechanism and more of a mafia-esque bullying mechanism.
Your point still stands, of course. (Though I choose to avoid taking the moral high ground not by condemning all of those entities, but by refusing to condemn any of them, since I don't see any fault here.)