> We have built everything ourselves, and it has worked out great so far, but we have put a lot more effort and resources into that, whereas we could have instead invested on the Product.

So, you don't use a libc, or a web framework, or any library that implements common logic that other programmers have spent ages refining?

If yes, erk, I don't want to be anywhere near that codebase. If not, I'm reminded of https://www.youtube.com/watch?v=YKjPI6no5ng