I sort of get what you are saying, but in poker terms, I look at a a given edition of a team (say, the 2019 Pats) as basically an all-in move, you have to be fully committed to what you are doing, and your recourse is minimal once you've set things in play for the season, other than to stick with it (trades are rare, the draft is months away, and injuries inevitably deplete some of your resources). It's admittedly not a perfect analogy but it feels about right to me.
A good poker player knows that even if they are the 52/48 favorite, if they are all-in and at risk, they *are* gambling. But you have to be willing to make those decisions and accept what comes. The good "players" (here, BB as the coach/GM) have a good enough decision making methodology that they are extremely successful in the long haul, even if they lose half of the coin flips along the way. This also goes back to the deep reserves of goodwill that BB has, where he isn't so concerned about one thing not going his way and can construct rosters/teams/environments for the long haul - he's not getting bounced for a single gamble that doesn't pay off at this point.