i would expect that content producers will start putting in abreviated versions of their content in AMP format to satisfy the AMP requirement as minimially as possible, and then add a link back to the original site for the rest.
If they don't do this already, they probably will if they keep going down the AMP rabbit-hole.
I think that’s a good idea, but I fear some users won’t realize there’s more or may not understand the abrupt change in layout/design/etc.