I've got working asp.net ecommerce solutions, but for my last project went back to Java/Dropwizard/IntelliJ - it is just way better dev exp. + perf is much better on Linux.
MS will be not interested in supporting competing (Windows Server/MS SQL vs Linux / PostgreSQL) server platform - it's sad but true.
That sounds to me like a reference to some boxed product running ASP.NET. Possibly aspDotNetStorefront? If so, that competes with PHP platforms for being a mess of code and non-sense design decisions.
I can hear people talking about Scala, Ruby, Node and saying better performance + dev experience (whether I agree or not) -- but Java? Not flaming here, that just doesn't sound like a well informed statement.
meh sorry - I mean: working ASP.NET mono ecommerce (no, not aspDotNetStorefront - ASP.NET MVC app on green field). I started when Mono was in Novell's hands and hoped they will push harder for C#/Web/Linux but it didn't happen and now Xamarin is interested solely in mobile so it's even less reasonable to use Mono for web on Linux these days. Don't get me wrong I admire Mono guys but Monodevelop (even recent versions) is just not IntelliJ level IDE and Java with it is not so bad (especially Java8). Maybe I would go with ROR or Python but it's SPA (Dart on client side) so Java is just webservice (Dropwizard makes it frictionless)
Imho, their strategy for asp.net can be easily what you described here.