Where is IBM WebSphere for OSX?

I have been using Apple Macs for the past three years since OSX operating system was first released. Since my switch from PC to Mac I have been very happy. My day to day work mainly involves the use of email and office-based applications, however my other part of work is the development of middleware solutions using enterprise-grade application servers. The problem that I have is that many application servers available run on windows, linux or Solaris (plus other mainframe environments) but not OSX which makes it very painful for me to try out ideas, especially while traveling and using an Apple Powerbook.

Currently I am using IBM WebSphere on a windows platform and it made me start to think about IBM and the way it is marketing its products. IBM is the manufacturer of the G5 PowerPC chips as used in G5 PowerMac and in G5 XServes. IBM also develops the WebSphere application server. You would think that if it wants to sell more G5 processors it would allow its premier application server software to also run on their own hardware (namely Apple XServes). I realise that IBM makes its own server class machines (zSeries) and in the latest version of WebSphere 6.0 also contains support for a new processor on the zSeries machines to run WebSphere even faster, but why miss the XServe market. I would love to be able to move my development environment over to OSX so that I could use either Eclipse or IBM's development IDE and run WebSphere all on my Powerbook or on an XServe (for deployment). I have even queried local Apple representatives about this and had no reply.

So why doesn't IBM provide an OSX version of its application server as this will truly boost Apple's profile to create an enterprise grade application server. I hear you say that Apple does support JBoss, but this application server is not really recognised in corporate and government circles. It makes sense to me for this fusion as Apple wins by having a truly enterprise class application server, IBM wins by selling more of their PowerPC processors and application server products and mac developers out there also win by not having to mix their development environment with those evil windows machines.