Skype already has enough market share that bundling with Windows is not likely to generate enough growth to justify the purchase alone.
Windows has ~4 times as many users as Skype.
Windows users could do this already without Microsoft owning Skype. Users who aren't able to install Skype on their own, probably won't use it anyway.
You mean instead of those out-of-the-box Windows users having to just go to www.skype.com? It's pretty easy to install.
There is a significant difference between bringing in a new product and having that product be a part of the standard install on every laptop/desktop from the perspective of Enterprise IT.
Yes, but wouldn't that get them in trouble because of the anti-monopoly laws? If I remember correctly, they got sued just for bundling IE with Windows, right?