An example would be actual real estate titles and deeds, not virtual real estate. This data set of who owns what piece of land could benefit from the features blockchain has as an open, decentralized database. You might eliminate a bunch of lawyer jobs and “title insurance” business in the process which is mostly bullshit anyhow. Decentralized is key because then it isn’t pay walled off behind some company. I didn’t mention money, tokens, or coins either because those aren’t really part of the use case. Public domain tracking of things is probably a solid use case in general but also might not be profitable. The decentralized part means the cost of maintenance is spread out more, maybe to the point of making it zero for a municipality.
Does this use case require blockchain? No, but it’s rare that any use case we come up with actually requires a certain tech stack to solve.