Evolutionarily, the emergence of an economy with capital at modern-day scales are so new that we haven't had time to really adjust emotionally. It kind of reminds me of the various birds on previously untouched-by-humanity islands that had no fear of humans and would just sit there and allow a human to club them to death, until their species went extinct. They had no time evolutionarily to develop an innate (emotional) fear of humans.

Physical violence/robbery on the other hand is a long-standing human tradition, and something we are hardwired to react to emotionally (Amygdala vs. PFC, etc). We can of course override our Amygdalas with our PFCs to some extent (in the medium to long-term), but the "gut reaction" core is still there.

Another possible reason (for me at least) is that ethically I have a lot of inner turmoil over violent punishments (which physical incarceration absolutely is IMHO) for nonviolent crimes. Of course reality is much more grayscale than that given that crimes like SBFs could leave a family destitute and starving, which is violence-adjacent if not outrightly violent. A violent sentence for a violent crime intuitively feels a lot more "let the punishment fit the crime" than a violent sentence for a nonviolent crime.

Anyway, I don't have answers, but throwing some speculation onto the pile.

I can not think of a single usable problem that blockchain solves.

So, to start, going to be clear I'm using your specific example of "escrowing funds on purchase of a piece of real estate (and I mean actual, real, real estate)". Simple enough. But, at the end of the day, who is to say "the keys you gave me are really the keys to the house you said you sold me"? That is, there needs to be some way to import to the smart contract ecosystem "yes, these are the keys to the house he sold me, and yes, the seller is the unencumbered title holder of this house". There is no real way to do that without some sort of oracle, and then you've just moved the problem back a step (i.e. you need to trust the oracle).

I happen to think title insurance is vastly overpriced in many states, but that's not the same thing as thinking that title companies (who normally do escrow in the US) don't serve a very important purpose. Most importantly, they ensure the seller is the actual title holder. And I can hear the crypto fans saying "Well, if you just held that title on a blockchain, there would be no ambiguity about who owns it." But that just pretends that all the real world examples don't exist, like a contractor who puts a lien on a house because he claims he wasn't paid. Also, in the real world, if someone steals the key to your house, it's not usually that hard to evict them and change your locks. In the crypto world it's "sorry, finders keepers".

So again, this simple example just falls apart on further inspection. Very happy to hear why any of the rationale I've given above is not correct.