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This sounds like a social issue though (compiler teams cooperating and keeping things up to date). It seems like when you have a smaller number of implementatio

This sounds like a social issue though (compiler teams cooperating and keeping things up to date). It seems like when you have a smaller number of implementations they tend to be more agile; look at the modern web browser landscape vs that of the 2000s, for example I'd bet that having exactly two implementations will be a good place to be

cmrdporcupine 5y ago
Yes, it was definitely social at least in part because MS leadership at that time didn't see something like GCC as a legitimate partner to cooperate with. They wanted open source to go away. Things definitely changed in that regard later. I think you're probably right that two Rust implementations with a cooperative mentality would be a good thing in the long run.