Only European airlines can fly within Europe. No foreign passenger airlines can fly within Europe. So the same arguement about not opening the U.S. Japan, Canada China applies to Europe which is not even a country but a concept.
new tomcat - please do some research before you make comments that are well off the mark.
Off the top of my head, these are some of the fifth freedom routes within Europe and there will be a number that I have not mentioned.
Singapore Airlines MUC-MAN-MUC
Garuda AMS-LGW-AMS
Kuwait Airways GVA-FRA-GVA
Lan Chile MAD-FRA-MAD
Europe nowadays is as level a playing field as you will probably find anywhere else.