So it turns into dumb cargo culting like "Proof of Stake is 100% proven not to work", "Proof of Stake is 100% proven to work", "Lightning Network is going to fix everything and bring world peace", "Lightning Network is going to ruin everything and bring WW3" etc...
And you can't have any constructive discussion because if you try to argue for or against a certain technical proposal you'll immediately be called a "paid shill" or a "troll" regardless of your arguments. I've been lurking in the bitcoin subreddits lately and it's really one of the least helpful and constructive communities around. And it's a bit sad because on the technical side the blockchain is pretty damn interesting.
We have our share of cheerleaders who take the black and white "this good, that bad" position without evidence, but they're not dominant, and we have a far larger proportion of developers who are interested in building cool technology and are able to look objectively at the problems involved.
People make outlandish promises that no person of average intelligence could ever take seriously taking up all the air, keynoting conferences and generally diverting discourse from what really needs to be done in order for this technology to be useful.
I think we have to wait for all the ICOs and rich statefullness flim-flam to subside before we see any real benefits from this space.
I think the next set of services (once we've solved scalability+transaction fee problems) will revolve around figuring out what to do now that we have a currency that is very easy to send to anyone over the Internet, rather than trying to develop blockchain technology itself further. Even just getting it into people's hands and developing the user experience further is going to result in the currency gaining far more utility. (I'll note that we still have no reasonable protocol for implementing subscription payments etc.)
There was a short period of time, between bitcoin entering the public consciousness and its technology becoming a platform for investment in thin air, an ability for me to buy a whole lot of things with it. With just a little effort, I could've survived with no traditional currency at all. And then that vanished, quickly, as it became obvious that its teething problems were not being solved.
So... why put notice that you own a piece of property on the blockchain, if you're already putting trust in someone to enforce your property? Why not just ask them to publish notice that you own the property?
What issues is the titling process solving that cannot be solved in any way without a blockchain?
Notary services were for a long time independent of the State, they may still be in some countries and places. This is indeed something in which a global decentralized trusted ledger can help.
The question is, exactly why do you need a trustless ledger in order to post notice that you're willing to enforce your monopoly? What problem, precisely, does a blockchain solve?
Probably some of those countries would like to fix this, and for them, a blockchain might make sense...say with multiple government entities cross-signing property transfers, rather than requiring all property owners to hold their own keys.
The thing is, the same Government could generally just storm in with guns and say "this is ours now". A known-good register doesn't solve the issue unless you have a separate mechanism of enforcing the register... in which case the solution is filing your deed with the people you trust to enforce it, not using a blockchain.
Also: if you had multiple Government entities cross-signing property transfers, they could just make the lot of it public the normal way, no blockchain necessary. Irrevocability comes from people making copies of the list of transfers.
Someone comes, takes your home and says "this is mine!".
Now you have to go to your government and prove that the person stole from you because it is yours. Some governments are efficient at providing this proof, some aren't.
Some countries in Africa have a huge problem with this. Where ppl go to other people's houses and sell them even though it is not theirs. And because it takes up to two years for someone to prove the ownership, sure the government will enforce the ownership eventually but two years is a long time. I've seen pictures of houses where the owner sprayed "This house is not for sale" to avoid this issue.
Now imagine a system where proving ownership is fast, nearly free and very hard to forge. The incentive to cheat the system is much smaller than before. Using a blockchain to handle proof of ownership is a great way to have a secure and nearly free.
Sometimes it is not about being able or not but how cheap / expensive it is and how slow / fast the process is.