>>Microsoft explicitly allows you to return the software to the vendor for a refund if you do not agree to the terms of the license.
>
>That has not always been the case. I had to deal with a case where I could not about 20 years ago.

It's also documented that about 20 years ago some users wanted to return their Microsoft software to the vendor and receive a refund, and it was not honored by the vendor, nor by Microsoft. It's in this movie at 59:22: www.youtube.com/watch?v=jw8K460vx1c&t=59m22s

The Linux community had a "Refund Day" for taking the unused copy of the Windows OS that came with their computer back for a refund.

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