Hi,
Just some comments on this issue. Yes, it is true that unix platform is better (stable) than windows. However, I would like to add another view as to why developers are starting to drop windows and move to linux.
I believe that the trend is - if any software is available on windows - somehow it can be cracked/hacked. I've seen lots of these softwares become available on the internet and streets - and all (most) are on windows because this (windows) are what people use on their computers. Now - EDA vendors cannot afford to let their investment simply be cracked after all of the effort put in. And also these tools are expensive.
I'm not saying that the tools on unix or linux cannot be compromised - on the other hand these tools are also as vulnerable as their counterparts in windows. However, not that many people use unix/linux compared to windows users. Such is so, the EDA vendors don't lose as much.
Anyway, necessity is the mother of invention. If one cannot use the tools on windows - somehow/sometime people will move on to these other OSes albeit slowly. And everywhere, even as I'm writing this - it has already begun....