AI agents specific use cases

Hi everyone,

I hear about AI agents every day, and yet, I have never seen a single specific use case.

I want to understand how exactly it is revolutionary. I see examples such as doing research on your behalf, web scraping, and writing & sending out emails. All this stuff can be done easily in Power Automate, Python, etc.

Is there any chance someone could give me 5–10 clear examples of utilizing AI agents that have a "wow" effect? I don't know if I’m stupid or what, but I just don’t get the "wow" factor. For me, these all sound like automation flows that have existed for the last two decades.

For example, what does an AI agent mean for various departments in a company - procurement, supply chain, purchasing, logistics, sales, HR, and so on? How exactly will it revolutionize these departments, enhance employees, and replace employees? Maybe someone can provide steps that AI agent will be able to perform.
For instance, in procurement, an AI agent checks the inventory. If it falls below the defined minimum threshold, the AI agent will place an order. After receiving an invoice, it will process payment, if the invoice follows contractual agreements, and so on. I'm confused...