An anonymous reader writes: In a wide-ranging interview, C|Net talks in depth with Jonathan Schwartz, CEO of Sun Microsystems, about the company's open source strategy. Schwartz indicates that despite (or, rather, because of) open sourcing all of its software, software revenues actually increased in 2006 by 13%. In his words, in order to have sales, Sun (and other vendors) must first have adoption. Open source is an efficient, effective way to drive adoption, and therefore is Sun's strategic differentiator against Microsoft, IBM, and other global competitors. Schwartz also shares his top advice for executives at both open source and proprietary companies, where he learned the power of developers in driving sales, and whether he views Red Hat as a competitor.