EXACTLY. My copy of Age of Empires 2 has all sorts of legal speak all over the box, and manual, and disc, and cover, and software.
My Crystal Castles machine doesn't say jack on the machine, doesn't say jack inside the machine, and doesn't say jack in the manual. So I don't understand how it can be retroactively affected. It had no license, so how can I be breaking that license?
Well, I don't think Atari can say you can't play Crystal Castles on your machine anymore without downloading from StarRoms, but software licenses can be changed, and retroactively. Here's a (real) example:
A certain company used to offer free downloads of add-on locomotives for Microsoft Train Simulator. The downloads were free, and the included license said the add-on was free to download and use, free to re-distribute (as long as the original company was given credit), and free to use in other freeware add-on offerings. I believe the license did prohibit selling the add-on, or using it in commercial products without permission of the authors.
At a later date, the company decided not to offer the package for download anymore, but to include it in a package that you would pay for. They also changed the license to no longer allow free distribution of the add-on.
A lot of the add-on makers who had based their engines (cab view usually) on this product were understandably upset.
I thought the logic should apply that since I downloaded it for free, and since my copy said free to distribute, I could do anything I wanted with it, including posting it on a website, if I so desired. I was quickly told in no uncertain terms that the current license basically revoked the license I was given, and I could not do this. Basically, they also said that while I could continue using the free download, if it ever got lost and I didn't have a backup, I would now have to purchase it from them. And I doubt I could even give it to someone else, even if I deleted all copies of it from my possession.
Point is - AFAICT, Atari can say "We are AMENDING the software license, and the only legal roms are those purchased from
www.starroms.com." All other roms must be removed.
They could also decide next week that they no longer wish to grant a license to starroms.com, and no licensed copies exist, and while you would still be able to use the software you originally downloaded, you would not be able to legally replace it if it got lost.