Social media: Likely to be replaced by Nostr or something similar.

Transport: Companies like Uber do not supply the cars or the drivers, only the technology to organize them. Perhaps a driver reputation and coordination system will emerge that cuts out the middleman. Especially when self-driving cars start dominating the roads.

Online marketplaces: Platforms like eBay do not provide the products, only the platform for buyers and sellers to coordinate trades. A multi-billion dollar company like eBay does not need to exist in a Nostr world.

Education: All the information you can find at a university is already available online. While people also go for the experience, connections and facilities (like labs if you want to work in STEM), there is a LOT of fat that can be cut from academia. Like, 90% fat.

Law and accounting firms: These survive based on managing data and understanding esoteric laws. They produce no physical goods. I suspect there won't be many human lawyers and accountants in a few decades.

Governments: These survive based on controlling money and information, neither of which seems feasible in a Bitcoin + AI world. I don't expect them to disappear, but most likely will be declawed. That also goes for government-adjacent industries like military and social healthcare systems.