Agreed. This argument comes up a lot, especially in open source, that resources on one project would have better spent on some other project. Developer focus

Agreed. This argument comes up a lot, especially in open source, that resources on one project would have better spent on some other project. Developer focus is not a fungible commodity. If the Golang devs hadn't been developing the Go compiler, they wouldn't necessarily have spent their efforts on LLVM, they'd just as likely be working on something other way to make Plan9 come about.