I know that's the concern, but at the moment it feels like a slippery slope fallacy to me. Hypotheticals don't interest me because there's a million of them, and there's a thousand of them that can make sense if you look at the right way. Maybe the preponderance of AMP will create a shift back to the user experience, and AMP's success renders it unnecessary. Maybe maybe maybe.
Maybe I'll rue the day I wrote this, but we're going to have to see. This is a self-created problem, and now publishers of all stripes will have to work to earn back the trust they poisoned.