[madduci]

While I might agree with you on some points, I don't want to spend time reinventing the wheel and introduce bugs into it.

Take for example standard communication message formats like FHIR or HL7. You definitely don't want to implement the whole definitions for the standard, which is already complicated.

Writing Cryptographic functions by yourself is also typically a shot in your foot, has proved in all these years of found critical security issues.

We live in a time where you want to actual solve a business problem, by focusing on the problem and not on how the solution is built properly. With the advent of AI this is even more critical, since all the code feels like stitched together blindly.

Spending time on developing all by yourself might give you a good shot in the long run, but first you need to survive the competition, who maybe has already caught the market, by using fast and throw-away code at the beginning.