The moment vibecoded excel has a bug that regular Excel doesn't and a user has to wait on you to re-vibecode it's over. They'll just use Excel while you're trying to get the llm to find and fix the bug.

> I see vibe coding in the business sense right now being a gateway to replace all of the ad hoc uses of excel

I rather use Excel. It's likely More robust and safer than the vibe coded app that could trigger data loss / incorrectness / issues any time.