You guys seem to be focused on billing which is the least of the issues, even though it is different than domestic for reasons including regulatory requirements. Also, are you aware of how much telcos have to pay in clearinghouse fees? I know it used to be a lot back when I was involved. However, you're not paying attention to the international HLR/VLR systems which cost a fortune, nor are you considering all the interconnects and the OAM&P that is involved. These items cost big bucks and as I said earlier, there aren't enough of us using it to make it cheap.
I'm confident that the EU will not crack down on these fees in any significant manner since they are justified. It's just a political pose to answer the people complaining.