Palm CEO Jonathan Rubinstein announced that the company’ll now focus all of its future devices on its webOS operating system, and’ll no longer making any Windows Mobile devices. Palm in its regulatory filings echoes “Licensed operating systems such as Windows Mobile "do not provide us with the same benefits as a proprietary OS, such as Palm webOS, in terms of control and opportunity to differentiate"”. Palm also noted that using Windows Mobile translated into a higher average OS cost per unit than using the Palm OS from its former sister company. By focusing on webOS, Palm gets to avoid licensing fees from both. It's surely a blow for Microsoft, but the company can empathize with Palm's situation. Microsoft's search team made a similar move several years ago when it exited licensing deals with Yahoo! and struck out on its own with a search engine, now called Bing. Rubinstein didn't refer specifically to Windows Mobile when he announced the plan, reports.