You have my sympathy in this.
Unfortunately, it is a major problem as so many games, etc. have become digital only. If the company that makes it shuts its doors, or even just closes the game, then the buyer is out of luck, even if you spent good money for it (look at how many online-only games like EA made are no longer available).
Not that anyone is really safe on console; most big games require patches, or additional content that even buying it physically is almost meaningless.
Compounding this is the fact that such moves also means the games may not be enjoyed in the future unless one goes through illegitimate means. Tell-Tale is a recent example of this; many of its titles are now being pulled from Steam. More than likely, the licenses they also got will prevent those games from going out as well; the Wallace and Gromit game was a good example of this a couple years ago.
shrugs Slightly off topic, but that is why when I can, I do purchase CoGs/HGs through Steam…that way they are still in my library. Of course, I would be screwed if Steam then went belly-up…