Someone at work vibe coded a replacement for a entire third party SaaS that we were using in a week. Their version is better.

It wasn't one-shotted of course but I don't think there's much difference in the outcome between one-shot and like 100-shot over a week. That company is still doomed.

Think of something like Trello. Who is going to pay for that when you can easily vibe code something superior (yes you really can now).