The barrier to entry is very high because for your OS to be able to compete, it has to support a similar app ecosystem. Getting most major app developers on boa

The barrier to entry is very high because for your OS to be able to compete, it has to support a similar app ecosystem. Getting most major app developers on board with supporting a new OS is pretty much impossible, especially given how many of them rely on Android or iOS specific software. I don't think this is unique to mobile either - pretty much everyone uses Windows or Mac because those OS's support the software that they want to use (although with everything moving to the web this is going away to some degree). The main difference with mobile is that the expectation (or requirement, with Apple) is that you will install software through the app store rather than just downloading it from the internet like on desktop.