Profit is how you motivate qualified engineers to stick with something until it's truly ready release.
Engineers working in your best interest don't work for free, that would be communism.
2) Locked eco system.
ITYM Secure eco system?
You will still spend days reading stories of really bad things happening to Google-Play users/victims right here on theRegister. Time and time again, we have demonstrated that a very tall walled garden is the only way. Third party libraries have not been your friend.
3) Lack of popular connectors/interfaces.
I've never broken a lightning connector since the iPhone 6. But, i work for a consumer product company that spends an enormous amount of money designing mini-USB connectors that don't break when you vigorously jam the plug in wrong-side-up.