The comment that started the thread was : I have installation media for MS Office 2010 in my desk drawer. If I lose the disc, I wouldn't expect Microsoft to replace it for me.

We are talking about physical media to compare and contrast the differing expectations around responsibility for backing up a digital download (what the linked complaint was about), and physical install media (what this thread is about).

> I'm pretty sure the business was very clear that I'm only buying the license though.

Microsoft in 2010 was very clear that your were buying physical install media for Office 2010 along with your license. They did this by making the physical install media part of the license purchase transaction.