All these coins are proven to be worthless. When speculation is making everyone money, the money isn't worth much. Edit: Love the immediate fear downvote. No one wants to hear their gold is really just shiny dirt.
I just went through the process of buying something expensive in a "trustless" system in an IRL country. It was pretty painful and very expensive -- I paid $300 just to get a guaranteed check cut! Of course this is a trivial problem to solve with smart contracts, if you can have things like real-life identity and real-life money mapped to them. While I don't think any of the crypto stuff out there today solves any of…
No, it doesn't. The 'contract' was never the issue really. We need a judicicial and regulatory system in which the contract is valid, the means to redress issues, undo transactions.
Now, $300 is probably too much to move money and speaks to the incumbency of financial actors ... but a good chunk of that cost is actually the reality of the fact that it takes a lot of very smart, very conscientious and super 'small-c' conservative running financial infrastructure.
I think regular fintech startups will beat down that $300 cost faster than crypto will.