The reason why Haskell didn't succeed is because programming languages don't actually matter. The best programming language is the one that is used by the most

The reason why Haskell didn't succeed is because programming languages don't actually matter. The best programming language is the one that is used by the most developers in any given field. All other criteria don't really matter. You can add as many constraints as you want to the language but it's not going to stop developers from writing bad code. The bottleneck with programming is human incompetence not programming languages. The language changes nothing.