Conspiratorial but has a string of possibility.

User: What are you doing?

Microsoft and Motherboard manufacturers: Putting DRM chips on the motherboard.

User: Why?

Microsoft: No reason.

User: Most businesses would switch to a cheaper toilet paper to save $5, why are you shipping chips and developing software and technology to use these chips.

Microsoft: Oh we're not going to force anyone to do anything, we just want the ability to. Look at this workaround that we expect 0.015 of our billions of Windows users to use.