Meaning that in this case the MS customers are not "end customers", they are highly specialized (in theory) and highly paid (in practice) IT specialists setting up (part of) a complex (and security sensible) corporate network backbone such as Active Directory.
Except that this was also the default in SBS, a product specifically designed for a small business with little to no IT staff. (Why a small business that didn't have IT staff would bother with AD I do not know, but I believe the package also included an email server?)
Yep, but come on, any small business owner won't even know what AD is or why it should be used, and they would be convinced to use it by an external consultant (as well in theory belonging to the highly spoecialised and highly paid IT people).
This leaves us with only a part of small businesses (the ones where the owner let his daughter's son, or his cousin, which is "good at computers" manage their network).
Meaning that in this case the MS customers are not "end customers", they are highly specialized (in theory) and highly paid (in practice) IT specialists setting up (part of) a complex (and security sensible) corporate network backbone such as Active Directory.