[notNow]

I don't see why it would be difficult for hosting providers to adopt Node on their servers. They're already doing this offering VPS and the likes.

Also, I don't see why there wouldn't be a viable Node blogging platform that could be as user-friendly and as easy as WP if not much more. This definitely is very doable and Ghost and Co promised to achieve to do that but they failed yet to make any meaningful impact on the market.

[tjsix]

They probably could, but it's more likely that the demand isn't enough to justify building out the required infrastructure and services to make things work properly in a shared hosting environment.