There is a reason it’s a duopoly, making a competing phone eco system to rival two of the wealthiest companies in the world is not easy. Microsoft tried but even they didn’t have enough money. People need apps, because companies want us to use their apps and there are only two app stores, one is walled off so you basically have to run Android apps or convince every company to make an app for your OS. I’m not wealthy so I only buy a phone every 8-10 years… if I can’t ensure I can do my banking shopping and entertainment on my phone I can’t buy it, and every banking/shopping/entertainment site is designed to be terrible on a phone so they can get you to install their app.