The term "target market" is itself misleading. The end user of Windows is, generally speaking, not buying anything from Microsoft (an Office 365 subscription notwithstanding). It doesn't even matter what any segment of the end users want anymore, so much as what the largest segment of them will tolerate.
This is the target market. It's not power users, it's not computing professionals, it's not me, it's likely not you. It's my mom. It's your mom. It's people that don't really know what their computer is doing.
The end user doesn't pay for the software and so is not even a part of the market at all anymore. The target market of Windows is OEMs and Microsoft's "business partners", with a shift lately from the former to the latter.
Windows is no more sold to your mom or mine than it is to either of us. It's sold to people who aren't even users.
