...regulator ComReg, ARPU in Ireland in 2004 stood at EUR48 a month, compared to a European average of EUR31, and operators’ profit margins are far higher than elsewhere on the continent. However, Meteor’s own ARPU was just EUR27 last year...
http://www.telegeography.com/cu/article.php?article_id=8284
...added services. Unfortunately, general-purpose mobile data services are unlikely to significantly increase operators’ profit margins. The Internet has accustomed users to unlimited usage at low, fixed rates. Furthermore, users have...
http://www.ixi.com/pdf/Mobile_Messaging_White_Paper.pdf