(re: What are the odds?) Well if you take even a cursory look around the internet you will see a huge number of people with absolutely amazing artistic abilities. That’s a big thing for me, because I believe that each part of the adventure game is equally needed: art, story, puzzles, characters, etc. Now of course not many of those people may be involved in adventure games, but some are, and others probably would be, if a company hired them.
Secondly, I think the odds are good. Take Tierra for example. Their long-term plan, as far as I last heard, is to start making commercial adventure games under a new company name, after they finish re-making old Sierra games in VGA (who knows how many more they will make, that’s up to them).