Yes, but now it's easier for other SaaS to compete on that, because they don't get to bundle individual features under common webshit UI and restrict users to whatever flows the vendor supports. There will be pressure to provide more focused features, because their combining and UI chrome will be done by, or on the other side of, the AI agent.
Also, having to retrain users to use a new shitty UI after they got used to the previous shitty UI is a major moat of many SaaS services. The user doesn't care about the web portal, they just want to get work done. Switching to a different web portal needs to be a big net positive because users will correctly complain that now they are unproductive for a while because the quirks and bugs of the previous SaaS don't match those of the new SaaS.
In a world where the interface is "you talk to the computer" you will be able to swap providers way more easily.
