That's not the heart of it. Imagine a government just said, "Ok, this blockchain solution is what defines true ownership." Theft would be rampant, but now police reports would be met by, "Sure, it used to be your house, but the blockchain says it's his now, so we're kicking you out. He stole it fair and square."

That hasn't happened because blockchains are a bad match for how people think of ownership.