In January 2007, XM enjoyed about 58% of satellite radio subscribers, and Sirius 160;had the remaining 42%. Both firms were suffering losses, despite their dominance in 160;the satellite radio market. In 2008, the DOJ decided not to challenge a merge, and 160;these two firms united become Sirius XM. If you were an economic consultant for 160;Sirius, what economic arguments would you have presented to the DOJ to persuade 160;it not to challenge the merger?