No. The problem's of proper system administration go far beyond issues of bandwidth. To apply a positive change you have to know about it, find it, download it, install it, and configure it. Not to mention it helps to understand the content of the patch, how it applies, and the social/technical context of the patch. And with Windows, this is in the presence of a large amount of proprietary software at the operating system, device driver, and application level.

So, no, good bandwidth does not solve the sysadmin problem.