That really reminds me of the "mashup" bubble in the late 2000's, when all services started to provide API and people were calling themselves "entrepreneurs" for combining 2 sources of data, like putting craigslist ads on a map.
That didn't last long!
Isn't almost everyone doing that. Deploy docker to AWS connecting to Slack, Open AI and Anthropic to do X Y Z.
Are you sure? We have many SaaS and final products which are just stitching together more SaaS. We have a very vocal part of the HN community always reminding you to buy a SaaS solution and connect it to your business instead of maintaining an in-house bespoke solution.