There's another issue that I don't see mentioned much here. I was contemplating writing a blog post about it. Over the past year I've seen a serious decline in early stage angel investment. I've talked to a lot of people who have said similar things. What I've heard and in some cases observed is that it's all going to crypto. All the people who would be making speculative angel investments are now buying into cryptoc…
Furthermore, we're starting to see that all those crypto startups have made so much money from their ICOs that they're starting to distort the job market as well. The kind of engineers who'd be naturally drawn to smaller startups and didn't want to work for Google or Facebook, are now being attracted to the crypto space in ever greater numbers. For that reason, it will become even harder to start a non-crypto startup…
Does the crypto world have anything to offer the real world?
Personally I've only seen one common use case: currency and wire transfer. As the OA correctly points out this use case is being harmed by currency hyper-deflation and fee inflation. Even the black market use case is faltering for these reasons.
Few ICO projects are even usable. Most don't even exist. Of those that are usable I can off the top of my head think of only one that seems to have any utility that doesn't recurse into crypto: Siacoin. Siacoin apparently works but it's not a compelling alternative to Amazon S3 or Backblaze, so its utility is minimal at best.