Not the parent, but Android allows easy installation of arbitrary APKs downloaded from anywhere. Also, there are multiple app stores on Android, like Amazon.

I am not saying it is worse I am saying I am locked into Apple's ecosystem. :)

voluntary Ecosystem lock-in is actually the reason I moved back to iOS. I use an iPad pro, and I don't believe there's a better tablet out there. I use Macbook Pros both at work and at home. Having all of those devices perfectly in sync is amazing for my productivity.