This is just as bad as Chrome's own store for packaged web apps. It's funny how they even say in the beginning that progressive web apps don't need to be packaged...but let's do it anyway, because we love lock-in!
I don't get it. Chrome's store is for Chrome extensions and apps only. Not progressive web apps in general. If I get it correctly, Microsoft is trying to create an app store for applications that are already available on the internet as is.