Could you enlighten me as to what WP Engine does differently from Automattic that you can't buy from them? Looking at the WP Engine, it's the exact same thing, with the numbers filed off, as Automattic offers.
WP Engine offers headless WP CMS to static, for one, and it’s pretty slick. I don’t believe Automattic offers that, yet. But I bet Automattic builds it in, in the near future, and that’s probably what this WP Engine beef is really all about: money.
They offered many features that wordpress.com copied (staging sites with one-button cloning; easy backup and restores; automated updates of php and wp code; tweaks to prevent security issues; automatic cdn) and others like serious engineers answering support tickets to help you sort out whatever fragile, insecure wordpress crap your marketing team, or their wordpress contractors, installed on your site.
We shouldn't overrate a lot of those features, because I think they were pretty obvious things to want. But WPEngine was, afaik, the first to market with all of the above in a pretty-cheap and seamless package.
Wordpress.com would be the equivalent. That said, they don't exactly offer an unmodified WP experience either at least not without upgrading to the higher tier plans. The base plan has plugins disabled for example. Not even sure how it's different from what Matt is accusing WP Engine of.