This is a nit-pick, but:

Travel agents are still around, but they’re not nearly as common as they used to be.

They are absolutely fantastic to have around when you want to discuss rather than plan the rote particulars of, for example, a “we saved for this one” vacation. A good travel agent has near-direct booking access to $GDS, has relationships, and vets and cross checks everything with a level of detail and experience that you really only get by doing it every day.

It has become something akin to the concierge industry.

> How is this different from grammarly, that has been around for many years?

I'm not sure how to answer this, because the compatibility gap between Grammarly and ChatGPT (even 3), in terms of English writing, is just too large. So large that I can barely categorize them as "the same kind of tools".

I can only confidently tell you one fact: before ChatGPT, people here were aware of Grammarly's existence. Yet they still sent their drafts to professional editors at a price of ~$0.1/word.

> This was a middleman job anyway, so it was just waiting to be removed, like travel agents.

You can say programmers are middlemen between specs and implementations. But that's not my point.

Indeed, I think it's middlemen all the way down. Everything eventually boils down to one of: survival, pursuit of happiness and pursuit of meaning. None of these actually require any actual "job" to be performed, and I can absolutely imagine us dealing with them in a post -scarcity world.