Coordination problems get more difficult in larger teams/companies. Getting everyone to use a particular non-standard language is a coordination problem. Thus l

Coordination problems get more difficult in larger teams/companies. Getting everyone to use a particular non-standard language is a coordination problem. Thus large companies are unlikely to experiment with languages. It makes sense too - say it's 10x easier to write something in language X than Y. If there's only 10 other people that might interact with the thing / have to read the sources, that's a great tradeoff. If there's a thousand other people that might have to at some point understand how some part of your code works, suddenly all of them have to learn the new language X.