Whilst AMP isn’t a direct SEO ranking factor, it does benefit users that are looking for more engagement (higher click through & visits) from the search engine results page.
Google have reported that it generally takes 8 seconds for mobile sites to load and that 40% of visitors usually click off from to another result if the site takes more than 4 seconds to load.
Another thing to note is the prominence of the AMP within above the fold of the mobile search results pages. Coupled this, with the increasing mobile searches, this presents a missed engagement opportunity.
Whether or not AMP is here for the long term is questionable, however, what we can assume as general knowledge is that as publishers we must leverage all possible features and formats in order to maximize the share of search a publication can get.