The business of selling software is due for an extreme makeover, industry executives said at the SoftSummit conference here. The trouble, they said, is the industry's rigid focus on the one-time sale of licenses, which <A HREF="http://news.zdnet.com/2100-3513_22-5418168.html?tag=zdnn.alert">takes long-term customer loyalty for granted</A> and lacks imagination and flexibility.