One way to make it more widespread is to make it so people don't have to rely on Linux to secure their wallets.
Certainly it would be nice not to be advised by Linux fanboys that it's the only way to go in every thread.
I agree, Specially since the advice is usually doesn't even take into account wheter the machine is an old XP or a fully patch and protected Windows 7.
The thing is for many small business, they have one machine and it's a Windows box. Setting up multiple box is fun and all but not necessarly cost effective if the business is just looking to grab a few extra clients by accepting bitcoin.