What Platforms Like Upwork Did Over Time?

In the early 90s still how, or mid 90s even how exchange market exchange on the Internet work. You'd have one service for matching right so you go like prices for jobsYou that was a job board on us now. And then you'd have a different website where you could post money in an escrow to to secure it. If things went wrong, the contractor didn't deliver or the client didn't pay, then you would have a third services such as arbitration and dispute resolution. So what platforms like upwork did piece by piece, they started bundling these institutions like you said. It's very difficult actually them to enforce the contract. The analogy here historical analogy here is