> A NAS is a standalone box that receives automatic updates, is 100% remote-management enabled by default, can be easily reset to factory settings,

Most NAS fail at one or more of these.

In addition 90% of them are very bad about security, and putting these kinds of devices on your company or office network transforms it from an internet access network into a garden for insecure appliances to be coddled, a stepping stone that must be vigorously firewalled, scanned, and monitored.