Smart contracts in general suffer from a lot of the same problems as "regular" contracts (and there people also do all sorts of things to make things studier, e

Smart contracts in general suffer from a lot of the same problems as "regular" contracts (and there people also do all sorts of things to make things studier, e.g., escrows, notaries, …). If smart contracts were to lock up all assets required for fulfillment prior to execution and completion, then they could get around some of the issue sometimes encountered in normal contracts, but then their use would be massively liquidity reducing/require huge additional liquidity in most cases. Whether the latter is desirable on a larger scale is at least debatable.