AMP is the solution to that long-term loss. It's not the best possible solution, but it's the best that we currently have.
Prior to AMP, the web didn't give a rat's ass about performance.
The web infrastructure we have today can respond to pages blindly fast if proper optimization is done, bloated front end frameworks and malvertising counter all of that to draw it down to molasses speeds - and the "I want to server my stuff to my users" argument is only valid if it's to extracting ad revenue from them - I think it's just time to reeducate people on the fact that ads may subsidize content but they can't fully sponsor it outside of niche situations.
Are they though? With the search engine example, how do you know that the engine is not biasing your opinion so that you act against your own self-interest and to the benefit of the advertisers?
The AMP situation is a bit more complicated, but how are you sure that AMP is beneficial to you in the broad, long-term sense?