[hackcoughgasp]

They are definitely counter to Apple's interest, but Apple is slowly pushing Webkit along anyway. See caniuse.com. You'd think the same about Google, but as I say in the article (I'm the author) PWAs are happening because Google has put a lot of effort into promoting them, pushing the standards forward and implementing those standards in Chrome. Why? My guess is (once again, as I say in TFA) that once all the code is back up on the web, the advertising shifts back to the traditional ad networks, i.e. Google.