Which is short sighted on their part. As an AMP early adopter they get a boost. But, as the industry moves to AMP their SEO boost is lost. So, their boost is short lived, but Google's edge influence expands and persists over the long term.
What's worse is once you've lost those short term gains, you can't actually back out since it'll actually cost you search result placements. AMP's a really shady move by Google.