It is that simple… if u motivate the nature of the Greek plan with the dangers the Greek situation poses to the euro and the EU as a whole  and in the mean time u specify that whatsoever u won’t do anything similar for anybody else u indicate that in case another country in a situation similar to Greece posing the same threats u won’t take the necessary steps to heal the situation, therefore the logical conclusion of that is should any more trouble come up, it will be then the end of the euro adventure at least under the form known today all the parties agreeing that there is no will or political support for any other bailout within the EU.