Re: And how is this surprising
"The surprise for many is that they were (and no doubt still are) carrying out commercial espionage against their own allies."
Countries are only Allies when it suits.
World War 2, it suited Italy to be Allies with Germany to begin with, but then it suited them to be Allies with the UK etc near the end because that suited them better. Likewise, France were Allies to the US until the Afghanistan "war" when it didn't suit France.
So yeah, if it's outside the theatre of war it's fair game.