Jonathan Schwartz writes an open letter to IBM chairman and CEO Sam Palmisano, urging him to get IBM apps ported over to Solaris 10. To me it seems, Sun’s customers are saying, well no IBM software, no buying Sun. Or all these could just be a way to get some excitement going – god knows Silicon Valley is back, and Sun is making no noise. Jokes aside, Schwartz sees this as a strategy to trap customers into IBM’s proprietary Power5 platform only. Not true – WebSphere for instance runs on Windows and Linux-Intel. Ditto for rational. Beyond that, why should IBM even do this. First it is backing Linux to the hilt. Secondly, Solaris is a proprietary Unix flavor from a competitor, which also uses its own “lock-in” chips.