I think it's also that more people trust the (openjdk/sunjdk) as a high performance vm with tons of money spent on developing an excellent gc and jit with a ton

I think it's also that more people trust the (openjdk/sunjdk) as a high performance vm with tons of money spent on developing an excellent gc and jit with a ton compared to mono. Although on the other hand its true that many people use an interpreter/vm like ruby 1.8 without much trouble.