I guess you could argue that there should be cheaper software, but most software people interact with is free/ad supported. Where it is paid, it's already a race to to the bottom.

Basically consumers don't really pay for software in the first place, and the leverage from labour companies get through software is already through the roof even before AI. Will much change for consumers of software?

The companies offering free software will leverage AI to extract more value from you via increased surveillance, ads, and paid preference shaping.

So... not much benefit either.