The business market is poised to play an increasingly important role in the US wireless industry as total subscriber growth slows. With the consumer wireless market approaching saturation, service providers will focus on the business market and its attractively high voice average revenue per user (ARPU) and still early-stage adoption of data as primary growth drivers. Business revenue is expected to grow from $29 bln in 2005 to $52 bln in 2010, IDC says. Growth will be higher for businesses than for the overall market due to stronger subscriber growth rates within this segment. However, revenue growth rates will slow from 19% in 2006 to 3% in 2010 as subscriber growth rates slow and pricing erosions impact ARPU and revenue growth.