If your main intent is just to make the right decision for the company, then my answer is buy those parts unless your main goal is doing math. You don’t need statistics to elaborate that, common sense is enough.
Since the manufacturers already produces more on top of those components, you already have enough to risk and test after manufacturing. Once your product works, go for optimisations and consider producing parts in-house.
If your main intent is just to make the right decision for the company, then my answer is buy those parts unless your main goal is doing math. You don’t need statistics to elaborate that, common sense is enough.
Since the manufacturers already produces more on top of those components, you already have enough to risk and test after manufacturing. Once your product works, go for optimisations and consider producing parts in-house.