The older I get the more I disagree with this POV. All other things equal, a single open source implementation is superior to several ones. Several implementati

The older I get the more I disagree with this POV. All other things equal, a single open source implementation is superior to several ones. Several implementations lead to duplication of effort, both for those developing them, and more importantly for those developing for those implementations. Software has to be tested separately for each implementation, often with vendor-specific hacks.