Well maybe our "naive" approach might be worth investigating. Because we put so little time into ridiculous missions like "distributed issues because git is also distributed", we are able to focus more on the product, customers, and processes. You know, things that actually drive business value and pay out everyones' bonus checks at the end of the year.

We have actually considered doing a complete in-house implementation of the things that GitHub handles, because we do already have an in-house management system that integrates with GitHub's API. But, we realized that we would then be in the business of maintaining what is effectively the GitHub product for a market size of 1 customer.