A 3rd party escrow I have to trust. Also without regulation. Likely, consumers wouldn't trust such an entity unless it was rather large, already known, and otherwise regulated. Like a bank. Consumers can trust those. Of course, the bank would want an escrow fee. Probably on par with the standard credit card fees.
Yeah, see, consumers like infrastructure. Someone they can call with issues. And to know that it's not just a server rack in some random semi-secure data center run by another fly-by-night-hacked-next-week bitcoin startup. And that you have insurance on the whole thing against theft, fire, hacks, etc. And that you're properly following all the government regulations for being a money transmitter.