I think it's less about requirements driving the existence of languages and more about the audience - C# as a clear example of Microsoft ensuring its developers

I think it's less about requirements driving the existence of languages and more about the audience - C# as a clear example of Microsoft ensuring its developers are upgrading to a technology that favors them instead of switching to Java. Not to say requirements don't play a part - Python exists because of Math/prototyping requirements of people that don't want to worry about memory or complex syntax (generics, etc..)