A real name identifier in internet is not at all times connected to the real human being currently present at the machine.  
How can one be sure that "John Travolta" in the forum is the real "John Travolta" ?  
An account (such as virtualx) may be used by anywhere from one person to a large group of persons.
A person may not be involved with an account at all (a Turing machine).
This is the case in both real name system and pseudonym systems.  
Thus, sadly the "more trustable market" is a false conclusion.