Right we know about ScummVM but that's not the point of this post.
However, the broken nature of the steam/2006 collection is likely the reason why it was removed from Steam in the first place. Not everyone knows about or how use ScummVM. Your average 'non-computer' person only buys games to have them work out of the box, and if they don't they aren't necessarily going to go hunt for methods for how to get it to work, but instead complain to the company they bought it from.
Personally I'd recommend one of the older collections either Collection I (albeit no KQ7), or Collection Series, or the Roberta Williams Collection. They come with more stuff, extra programs, extra games (King's Questions, Graham's Board games, and in Collection Series, and ROberta's sets, you get some of her other series such as Laura Bow Mysteries, and Mixed-Up Mother Goose, and Hi-Res Adventures). Better manuals.
http://kingsquest.wikia.com/wiki/King%27s_Quest_Collection 2006 collection has:
KQ1 remake version only (does not include the AGI version of KQ1), and packs the windows only version of KQ7 (no 64-bit support). Broken introduction video on KQ6 (a file needs to be added back into it for it to work correctly, GOG has this same issue).
Still there is no reason that gog's edition shouldn't also include the KQ1 remake 'legally'. Promoting piracy isn't allowed on these forums, although some people do use that method.