The trouble with that argument is that it relies on the stronger members having enough economic power to actually do that. It is far from clear that this is currently the case, with the expansion of the EU in recent years to include many far less economically advanced member states
The problem with that argument is that the economic condition enjoyed by the stronger nations is built upon the exploitation of the poorer ones. You don't get to complain about how poorly someone is doing at treading water while you step on their head.
That may be the case with the world in general, but for this case (ie. the EU) it is not the case. Most of the poor economic situations are self inflicted from corruption, poor taxation system or just plain bad government. No one forced Greece to be a corrupt tax avoiding nation and certainly no one was benefiting from what they were doing.