Hierarchy of global arms production unchanged (as usual)

On page 28 of my book The No-Nonsense Guide to the Arms Trade I referred to the "international hierarchy of arms production" where a few global companies dominate the global competition for military contracts. This is best illustrated when SIPRI or industry journal Defense News publish their new "Top 100" arms companies. Today's SIPRI publication (http://www.sipri.org/research/armamen...) has the same companies in the top 100 for 2010 as I had on page 34 of my book for 2007. Even the rankings have stayed the same except for BAE/Boeing and L-3/Finmeccanica, who have swapped places.
Despite the arrival of many new companies further down the food chain, the global arms industry is become increasingly concentrated in these companies - which account now for 56% of the global arms market, up from 44% in 2003 and 22% in 1990.