Think about all of the licensing, money printing, and registration agencies to ever exist. What percentage of them have significant corruption? Blockchains provides a lot of stability in a way more traditional human organizations fail to.
[1] https://cointelegraph.com/news/blockchain-enthusiast-alleged...
[2] https://www.reddit.com/r/copypasta/comments/7iqxko/libertari...
And when stating the imagined gains, the costs are always assumed to be zero. We know not to trust our data to a version 0.3 app, but somehow that's a fine thing to do with one's house or life savings.
If the on-chain house title isn't the real one, treated as the ultimate authority, why would anybody want to buy it? Nobody in the right mind would want to pay for something that doesn't actually confer ownership. At that point, there's no benefit over just selling your house the normal way because all crypto does is adding extra steps to an existing process.
If the on-chain house title is the ultimate authority, then the logical conclusion that any way of obtaining it is valid -- if I manage to get it, then I should be able to kick you out of your house, since now I possess the title.
The first option seems useless/fraudulent, and the second incredibly awful security-wise. Fall for a scam/virus/trojan once, and there goes all your stuff.
Imagine the revolution they can bring to other old school ledger system for houses, cars, licenses...