Matt Duchene played 9 seasons for the Avalanche, 7 of those as the 1st line centre.
He had MORE than enough chances to succeed.
What does THAT have to do with anything!? Just because he played on the top line it doesn't matter who his linemates were, who the goalie was, or who was on defense, or even the coach!?
One could argue (and I will) that he never had an actually good coach until the very end of his tenure with the team. The organization drafted like absolute garbage the whole time he was with the club, and made a great number of spurrious decisions with trades and free agency. And say what you will about the guy but he never once made a fuss about his salary or the role he played within the club.
Look, I'm not saying the Avs would have absolutely succeeded with better players around him, maybe he really wasn't The Guy (personally I still think he could be), but whatever the case you can't seriously say the Avs did a good job building a team around him, because by any objective measure, they failed miserably in that department.