I don't get this holier than thou attitude. You mean you can't do innovative things in C# that you can do in Ruby?
How will LISP help an investment bank? How do the millions of CRUD apps in startups written in Ruby, PHP or Python change the world? What about F# being made a first class member of .NET?
An enterprise app in Ruby will be as boring as the one in C#. Its to do with a risk averse attitude instead of adopting the framework of the week. A robotics program written in C# or F# can change the world.
It breaks my heart to see an empty superiority complex at work here.
It's akin to carpenters feeling great about their choice of tools and insulting others choices rather than showing off their allegedly wonderful creations they built with the tools. For example, take StackOverflow, written in .NET and scaling much better than other web apps by using the right tools rather than getting caught up in partisan arguments.