That is only true for the languages that manage to gain some momentum. I could probably write a new language, given some time (I am not underestimating that tas

That is only true for the languages that manage to gain some momentum. I could probably write a new language, given some time (I am not underestimating that task), but most likely it wouldn't bring anything new so nobody would use it. I'd say that language designers who manage to convince one person to spend the time to learn their languages for a pet project have already done a good job.