There needs to be a true 3rd option and not something based on android just like Windows Phone/Windows Mobile back in the day...
What would be the purpose of the 3rd option?
in regular computers, there are three main operating systems:
Windows: This is the defacto consumer operating system
MacOS: For people who either like integration with Apple products, or for security.
Linux: For robustness and reliability when serving up files to client computers.
For smart cell phones, there are only two:
iOS: For people who either like integration with Apple products, or for security.
Android: For people who like customization, or people who are too cheap to buy an Apple product
What would be the differentiation of the third product?