Indeed, and so it's uncool and crappier than Python? How is that related? The OP clearly used the term "enterprise" with a negative connotation. I doubt he was referring to a brand name.
Actually though, it's rather difficult to run into Mono incompleteness when making a web app these days. Mono's mostly lacking Windows-specific stuff like WPF (UI-framework). Used to lack Entity Framework but that's solved since MS open sourced that. You can take an existing ASP.NET app and there's a very high chance you can just build it with xbuild and host it with Mono's xsp server.
More generally, I do see your point but I believe it's a little outdated; the time that Java apps just had to be built on 200k lines of XML is long gone as well.
It's obviously a matter of taste, but I find it difficult to accept that well-written Python would be easier to read than well-written C#. C# is more verbose in places and less verbose in others. Writing crap code is about as easy in both.
Don't get me wrong, C# is relatively explicit and regular, which does wonders for its readability especially in large projects with many collaborators. But brevity is not one of its strong suits, nor should it be.
I think that's the only place, though.
As noted, Oracle uses the term "enterprise", which I take to imply a corporate approach to language implementation the coincides with service/support agreements and other business models.
For what it is worth, the JVM is second to none for interpreted languages in my book. At the same time, I don't use it and if I ever find myself going back, it will be for Scala. I don't much care for Oracle's brand of innovation (I don't think it is sustainable).
Tell me something, from your perspective: Why should an aspiring technologist learn Java over Python?
Apart from that, I agree with you.
Language pissing contests are dumb. Languages are tools, each serves a specific job.