Personally I've always been slightly amazed that at no point in time did anyone at Microsoft think that making msn.com the default homepage for servers was a bad idea.
Hilariously, Microsoft production servers are also set to the MSN default homepage, even though most forests are firewalled off from the entire internet.
Personally I feel it's completely understandable. Microsoft has huge market power. It's hard to abandon software you are locked in.
More importantly people who suffer from to those interfaces are not in position of power to make switch operating systems. Forcing them to eat what MS feeds them seems like good way to experiment. If experiment fails, you don't have to hurry and repair it.
How many people actually care about a default homepage in IE in Windows Server? And is it worth the time and effort to make that setting dependent on the SKU?