Probably some combination of both.
Gotta have the right combination of analytics and scouting to identify holes in their games that are contributing to a performance deficiency, and those holes have to be fixable. In other words, you have to have analytics and scouting to filter out the chicken s%*# from the rest of the chicken.
Then you have to have the culture that allows (or forces) the players to buy in to the message and makes them open to fixing the hole in their game. You can't teach players to give a s%*#, but you can make them want to give a s%*# by having a good culture.