I'm very much looking forward to this shift. It is SO MUCH more pro-consumer than the existing SaaS model. Right now every app feels like a walled garden, with broken UX, constant redesigns, enormous amounts of telemetry and user manipulation. It feels like every time I ask for programmatic access to SaaS tools in order to simplify a workflow, I get stuck in endless meetings with product managers trying to "understand my use case", even for products explicitly marketed to programmers.

Using agents that interact with APIs represents people being able to own their user experience more. Why not craft a frontend that behaves exactly the the way YOU want it to, tailor made for YOUR work, abstracting the set of products you are using and focusing only on the actual relevant bits of the work you are doing? Maybe a downside might be that there is more explicit metering of use in these products instead of the per-user licensing that is common today. But the upside is there is so much less scope for engagement-hacking, dark patterns, useless upselling, and so on.