Another benefit of open source development: you don't have to assert that it's good enough; users can decide that for themselves.

When you market a product, you're essentially asserting "I believe this tool is at least good enough for your use".

Sometimes that's hard to distinguish a priori, and if you get it wrong you can significantly erode trust.

But often your product is "good enough" for some motivated subset of your users well before you realize it.

Open source development allows a thing to not be marketed, and yet still have the possibility of self-selecting users using it anyway.

When users start using it, that gives you some signal to help you get a better handle on the implicit decisions you've made, an opportunity to tweak them.

Once it's heavily used by self-selecting users, marketing it becomes a no-brainer accelerant, instead of a do-or-die moment of truth.