As someone who did something similar in my youth my argument was that the new language presented unparalleled productivity opportunities vs the “old” The real

As someone who did something similar in my youth my argument was that the new language presented unparalleled productivity opportunities vs the “old” The real reason was of course that I wanted to play with the new thing. You are right, Market fit and the idea matter most (when assessing a new company) But not all ideas should be weighed purely on profit. If op is in a healthy financial state and can shoulder the risk for a year, it’s hard to weigh the opportunity risk for him as a person. It might reinvigorate a love for programming or lead to a job in this new language. And ofc it may also just work ;)