What do we, collectively, as tech workers want?
Right now, companies like Uber can treat workers poorly -- apparently at a policy/organizational level even -- because the only thing they feel they have to fear is a bit of bad PR. No one has these workers' backs. HR is concerned with protecting the company. And the workers likely don't have the time, money nor stamina to fight a huge corporation with a lawsuit.
That's why workers need to band together to look out for one another. The deck is already stacked against them.