I believe you're downplaying the potential here (and I'm overplaying it). A particular blockchain you could immediately verify home ownership online via some sort of signature with the public key from a seller seems like providing the same type of guarantees. Is it 100% safe? Certainly not. But considering your notary might be a fraud, a scammer or just not very good at what he does...
Compare the example with withdrawing money: you can go to an ATM and withdraw money for no fee, depending of the country. Do it in the bank, there I an associated fee.
The legal system would still have to adopt it though. And it's an industry less prone to digital innovation. And there is no financial incentive, as there is no narrow profit margin you need to optimize. So yes, it may never happen.
Compare the example with withdrawing money: you can go to an ATM and withdraw money for no fee, depending of the country. Do it in the bank, there I an associated fee.
The legal system would still have to adopt it though. And it's an industry less prone to digital innovation. And there is no financial incentive, as there is no narrow profit margin you need to optimize. So yes, it may never happen.