Maybe Amazon is serious but I personally doubt it.<p>If you really want to be the next big engine you need large support teams. Dev rel people, tech support people, you need to organize conferences, constantly put up tutorials, evangelize, etc..<p>Maybe Amazon will do that but most tech companies that barf out an open source engine have generally not really committed to support them past the 2 or 3 engineers that started them and who will only continue to support them for 6 months until either they get bored or until their boss tells them to get back to their real job<p>Of course if Amazon is serious and they actually have a budget for 100s of people on the teams supporting this then great!