People say things like this, but can you name an instance of this actually happening? What non-trivial existing free software has been displaced in popular use by a vibe-coded alternative?
And it's not just free software either. AI can quickly reverse engineer compiled software too. It's almost scary how it made short work of all the firmwares running on my laptop. Even the days of compiled proprietary software are numbered since AI can trivially make free software out of them.
We live in interesting times. The very act of publishing software at all is now questionable.
Whereas if you ask it to generate a new large complex piece of software, the amount of human labor required to guide it into producing something that isn't hot garbage and then continue to maintain it indefinitely generally compares unfavorably with the amount it costs to buy a support contract for the existing thing.