We've seen hackathons where attendees build a SaaS business in a weekend. More than just Startup Weekend validation and a shitty MVP. A pretty-much complete SaaS product. It's a step change.
But this means the market for SaaS products is going to get hit hugely. If you can vibecode up a specific service for your specific requirement in a few days, why bother buying a SaaS product?
And, of course, if you can build a me-too SaaS product that imitates a successful competitor over a weekend, and then price it at 10% of their price, that's going to hit business models.
I think the SaaS startup gravy train is definitely over and done.
Personally, my sense is that there's a lot left to do in batteries + motors + LLMs. The drones in Ukraine could be smarter. Robot companions that can hold a conversation. Voice interfaces for robots generally [0]. Unfortunately, the people making all the batteries, motors, and increasingly the LLMs, are in China. So those of us stuck with idiot governments protecting their fossil-fuel donors are going to miss out on it.
[0] the sketch of two scots in a voice-controlled lift still resonates, though. There's probably still work to do here.
The biggest limiting factor is user acquisition. Just because you can build a competitor in a weekend doesn't mean you can easily acquire a user base. it's dam hard to get users even if your product is twice as good and your giving it away for free!
The value in SaaS was never the code, it was the focus on the problem space, the execution, and the ops-included side.
AI makes code "free" as in "free puppy".