I’m not sure how you could work around it. If you wanted to, say, import an iPhone from Europe then Apple could gate access to the App Store based on your IMSI.

I’m not sure how you could work around it. If you wanted to, say, import an iPhone from Europe then Apple could gate access to the App Store based on your IMSI. Then you’d need a European SIM with your imported phone, so you’d be roaming all the time. And presumably Apple could detect that you’re roaming and just redirect you to the US store anyway, disabling any 3rd party app stores anyway.