I think Apple is responsible by releasing new APIs that are only available on the specific iOS version. Rarely have they back ported functionality to older iOS versions. Apple draggles shinny new APIs in front of developers causing them to update the minimum version.
Yeah Apple rapidly dropping support with Intel Macs is really terrible. I have a 2018 Mac mini that is already obsolete, what a joke. That was the last Mac I buy.
The security updates for old iOS versions are a sleight of hand. Most companies only support the three latest versions of iOS, so soon that will be iOS 17 as the minimum. I had a device stuck on iOS 15, which was released in 2016, and banks and other major apps dropped support. So while the phone did get security updates, it can’t run the apps I needed.
You also need every company to develop for a third mobile platform, where two different ones are already a big ask.
Easy solution would be to run existing apps on Linux, probably would be Android.
Another solution would we move to PWAs to have apps in the browser.
Both these things already happened on desktop Linux with Windows games using Proton and most proprietary desktop apps switching to Electron.
What if there were only two car companies?