Well as always when dealing with game that has been abandoned it's probably illegal. But morally I'd say it's right. But is a debate that's been going around ever since people realised their favourite games were not going to be kept alive by whatever force had deemed the game to die.

As for me I consider all games to be interactive art, not always good art, but art nonetheless. And I don't like it when things are left to wither and die. I don't see games as a fast food market, as a large part of the worlds publishers do.