The companies as they are today may not be achieving their mission - that doesn't mean that they won't in the future.

Facebook has succeeded in making the world a more open and transparent place - people have the ability to share information that matters to them and have people around the world find out about it. There are fewer places around the world for those in power to hide information away now. That's different to whether Facebook as a company is transparent.

Uber likewise may or may not be reliable now - surge pricing only ever increases the price of an Uber to the same as the price as a black cab where I live, but it's pretty clear that Uber's ambitions of self driving cars do not include surge pricing.