I don't know how anyone can call this a "gamble" by the Warriors. And our hopes and dreams that Cousins will be permanently disabled by his Achilles injury seem overblown; Kevin Pelton's analysis of the trade includes a tidbit about Achilles injuries, saying that according to his data, players returning from that injury tend to underperform previous norms by 8 percent. 92 percent of full-strength Cousins is still an all-star.
Also, Rudy Gay had the same injury at almost exactly the same point in the season two years ago, and he was back in time for training camp.