The echo thing is that Amazon makes it US-only and Apple happily obliges and hides the app from me. There isn't a lot that is more anti-consumer than that.
I downloaded the Android APK and sideloaded it on my Android device. Sure, the echo doesn't support Canadian addresses (although it does have Canadian content) it otherwise works fine.
The Apple issue is that you have no alternative. The app is similarly region restricted on the Google Play Store. If there was a Windows version, it would be similarly restricted on the Windows store. But only on iOS do I have no alternative to getting it.
I'm happily running the app on my Android device despite it being region restricted. Sweet sweet freedom.
I downloaded the Android APK and sideloaded it on my Android device. Sure, the echo doesn't support Canadian addresses (although it does have Canadian content) it otherwise works fine.