The electromechanical braking wasn't developed by Tesla, though--it was developed by Bosch. Which is not a criticism, it's just a reality check. And it still layers servos on top of hydraulic braking systems.
Lots of companies--indeed, probably every company--are using electric power steering without a hydraulic component.
Honestly, I know a lot of people are really excited about autopilot, but this doesn't strike me as something that Tesla can disrupt, the way that it is disrupting so many other things. The hardware, software, and overall functionality of autopilot is going to be common across the industry within a few years. There's no reason to think Tesla will be better at doing this than Mercedes or Ford.
I view trying to compete in this space as a bit of a distraction. Tesla's core mission (and competency, and competitive differentiator, is its EV knowledge (and supercharger infrastructure). They have to have driver assist to keep up with the other companies, but any time they spend on that that takes away from BEV and SpC development is, in my mind, a waste.