I would say it comes down to choosing battles. If a pre-built component becomes regularly hostile (Axios), it's better to forge your own. Doing that for every component, even the ones that are solid, can have you never leaving the forge. I worked with a guy in 2006 that wanted to do privatized space flight. I was excited about his lofty goal. Over the next couple of years, I started learning that he continually wanted to build everything himself. Flightsuits, the components of flightsuits... he probably wanted to mine the metals too. Learning to leverage the work of others is important, it's how great things are built. At the same time, blindly relying on others is destined for failure.