Does the wordpress commercial offering not solve this issue ? Maybe I am wrong, but I understood it also as setup and forget. Any users of wordpress.com could provide more information..
Well it definitely does improve the security on the "Wordpress" part, but there's still the custom plugins to worry about. Sure, the Woo* plugins and other premium offerings are great, but there's still lots of niche plugins that don't work together with each other, or break on newer WP versions, etc.
