If you say, "Selling cryptocoins to others", that isn't actually a product or service.
Oracle (READ: aggregated/decentralized APIs feed) services and other infrastructure that supports decentralized protocols (network graph, etc.)
Decentralized lending, borrowing, trading.
SaaS products in on-chain analytics, portfolio management, commerce aggreggation.
Gaming
Fine Art (a tiny minority of the art scene in crypto is pretty interesting, ex. distributed multiplayer run-time art, something that can't really exist outside of the medium)
Digital Collectibles as an end consumer product or in service of the construction of lifestyle brand / gaming / etc startups. (A lot of the most boring use cases land here, imo)
Advertising
Content creation/consumption
Ownership of bitcoins doesn’t give you ownership over these entities the same as ownership over some shares of Apple.
It’s like saying that you having dollars in your pocket gives you ownership over the White House.
Regarding ownership, however, you can explicitly own things- or parts of things- on the basis of token ownership, but you’re right that this isn’t the way that bitcoin and many other technologies are structured.
And only bad ones from crypto.
