It can be very difficult for someone to switch between iOS and Android. They're called ecosystems for that reason. There's the obvious problem around apps and

It can be very difficult for someone to switch between iOS and Android. They're called ecosystems for that reason. There's the obvious problem around apps and protocols. If you've been using them for a long time, your apps, their connectivity to each other, personal data etc is likely to be locked into Apple services & devices, or Google services & devices, in a way that is difficult or even impossible to move over (I know people with data they can only access now if they buy a license to apps they can no longer run). More subtly, for example there was a recent article about how people in some places experience a social penalty if they aren't using iOS, because the difference is visible to others in terms of protocols used for instant messaging. In my view, the great difficulty of switching and the penalties of switching mean that both Apple and Android ecosystems are, more or less, separate marketplaces, and each one has a strongly dominant player that should be subject to anti-trust measures. Basically if you build a platform ecosystem, expressly design to lock-in users especially in ways that hugely affect their lives, that comes with responsibilities you don't have in a free and competitive marketplace where your users can switch with low friction.