Really... so two "wrongs" really do make a "right".

So when an employer sees many employees and candidates work the system like this, then they are also right to say, "pretty much every employee we've hired or candidate we've spoken with tries to dishonestly game the system and deals with us in bad faith, so we're justified in screwing with them any way we please. No moral fraud here: we're just doing onto those as those would do onto us."

Well, great... you've defined a level playing field that's working as optimally as it can and without any moral blame at all.