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.
All those issues are solved in modern day pc gaming. Even GOG with its drm free games automatically updates and syncs your games, and even supports beta channels. Also, I don't recall the last time I had a OS related problem more complex than "update your graphic card driver".
On consoles this is even more of a non issue.
Just think of modding as an example. It might capture some console players, but I am not sure if they pull off even that, since the service is actually more expensive. In that case they will also need to compete with exclusives like other systems and it is questionable if developers will commit.