Even the escrow on localbitcoins (which I love) is in fact a trust of localbitcoins. I have been bitten once by it. Bought some, sent the money, and the guy launched a dispute and I had to go through a whole long process. I won, but the bitcoin should have been mine and it was stuck in escrow for so long.

So however it works for escrow, a guy, a company, you still got to trust them based on the community feedback for them.