"He says the real reason for creating Mono may well
have been "the old Open Source/Free Software disease of being
unable or unwilling to cooperate with existing developers who are
doing something similar to what you have in mind. Much easier to
start your own project to do something similar, after all that way
you have complete control over it."
"He adds: "And if you believe that by developing Mono you will
get Microsoft Windows .NET developers to move their code over to
Linux then you can even claim the moral high ground."
"Pointing out that Mono is dangerous for free software, Allison
writes that Microsoft has patents on the technology inside .NET and
had shown by the TomTom lawsuit that it was not averse to making
patent infringement claims about free software."