Totally agree, but unfortunately people (forgive and) forget and that's why those companies keep on doing this.

I myself forgot Microsoft once (cough) sold e-books.

Did Microsoft ever sell directly? They had Microsoft Reader but I thought all the stores were third-party.

However, Amazon did at one point in time sell ebooks in multiple formats pre-Kindle, one of which was Microsoft Reader. (I assume the others were PDF and Mobipocket.) So they have form for closing up shop and killing access to purchases like this.

PlaysForSure was also a great name.