In some cases that could happen; in particular there may be a lot of UI and cross-app-integration style stuff that starts to get offloaded to users, so users can have AI code up their own UI for using some services together in the way that they want.

But in most cases businesses still need to own their own logic and data, so businesses will still be owning plenty of their own software. Otherwise customers could just write software to buy all your business's products for 99% off!