Overwelmingly the smart contracts for ethereum are for automating settlements for bets, financialized flash loans, etc amongst the tokens issued in that network. Its not really solving a societal problem. Staking is an attempt at producing ongoing yield without effort. Its just recreating existing problems in tradfi. So i guess the real world problem is being able to bet against someone on the opposite side of the world, share a trusted real world oracle, and use the contract for enforcement in settling value.