That reminds me of the "If those books say something worthwhile, it will be in the Kuran, too, so it's ok to burn them. If they don't, they it's ok to burn them anyway" argument -- something a sultan is alleged to have said as the justification for burning the library of Alexandria.
The thing is, it's not just the feature set, different languages have lots of different things going (or not going) for them too.
One might like Go's syntax over Haskell's.
Another might not like Haskell's purity.
A third might not like Haskell's heavyweight platform installation and tooling.
Another might be forced to use Go because of his work but still hate the lack of Generics.
Yet another might prefer Go over Haskell just for the fact that you can find Go jobs, where Haskell jobs are too few and far between.
The thing is, it's not just the feature set, different languages have lots of different things going (or not going) for them too.
One might like Go's syntax over Haskell's.
Another might not like Haskell's purity.
A third might not like Haskell's heavyweight platform installation and tooling.
Another might be forced to use Go because of his work but still hate the lack of Generics.
Yet another might prefer Go over Haskell just for the fact that you can find Go jobs, where Haskell jobs are too few and far between.