ixbt25i: Let's see when the first GOG ads show up on the Internet Archive. They're like the unofficial insignia of every abandonware site.
shaddim: Yes, a cooperation would be the most clever solution for both sites.
GOG could present themself as part of the ongoing effort for protecting and archiving the digital heritage of the mankind.
It doesn't work that way. In fact there is no law authorizing distribution of games for "research" purposes. It's all piracy, and the site can try to shift liability, but that doesn't usually work. Pirate Bay claimed the same thing, but even better. All they are is a tracker, no files are on their servers. They lost and were ordered to pay millions of dollars in fines for infringement.
This site is hosting these games on their server...how well do you think that will go over?
And if GoG did as you suggest, they go out of business with all the lawsuits from the publishers they screwed over.