I'm not sure if I can think of any SAAS product that isn't another wrapper or abstraction around code, database, another service etc... I just don't understand why people seem so upset about these new companies being GPT wrappers.
SAAS brings the cool things people build in our insular computing community to the general user in an intuitive way, and that's celebrated. Not sure why these "GPT Wrapper" companies are getting so much hate.
To get to the first part of your question: no. Every SaaS I've worked on for instance has included months if not years of creating intellectual property (often from scratch) so that the user's are receiving significant value over what they could do themselves.
Jealousy aside, I think they are poor business models because there is little to no barrier to entry.