I would say that if transatlantic lines are mostly ordered and paid for by European companies that you are probably correct. But part of the reason is that European government run PTT's charge horrendously high rates for international circuits.

It's more expensive to install and operate a fiber in an ocean than along the railway-tracks. Regardless of tariffs, 4000 miles of transatlantic OC-48 is more expensive than 4000 miles of land-line OC-48. So, if both sides agrees on the 'benefit ratio' add the costs and divide the sum according to the ratio. -Peter (Sorry to repeat myself..)