> AI is doing the same and fundamentally changing the economics of production.

Not really. SaaS were already trivially replaceable; it's just slightly cheaper now. But the line item is still a line item.

> What used to take years and huge teams to build can be built by much smaller teams much faster.

It takes years to develop a product, but only weeks or maybe a couple months to replace. You're greatly overestimating the work that goes into building a clearly defined product.

The expensive part for producers is figuring out what to sell and how to define the market. The expensive part for customers is burning capital while chasing after customers who would rather not think about the tools they've already committed to paying for. AI just burns the fat off of an already lean process.