Yes his assertiveness and drive got them where they are, but sometimes companies do need to grow up.
Jobs was a consistent asshole expecting perfection. That is way different than emboldening a climate of harassment, degradation, etc. that took place under his watch. Having recent external c-level hires quit due to the revelations of "culture" speak much.
I hope Uber can continue. As someone who travels internationally on business, it's quite useful. Seeing him go, it's just one more example. Pincus felt screwed through how Tribe.net went through, set himself up in a sheltered position at Zynga and through a combination of "management style" and problems at the company had to step down.
The cultural issues made public between Zynga and Uber are way different, but in both cases you had CEOs that structured the holdings such that they could retain power despite turmoil.
Sometimes the turmoil is too great.
My last international trip, I used Lyft.