[stephencanon]

Yeah, there's a bunch of advanced stats that more accurately model this in sports. My point is twofold:

(a) despite the existence of better stats, a lot of people still care about goals/assists, because they're much easier to understand.

(b) the difficulty of measuring these stats in low-scoring sports (soccer, hockey) is greatly magnified in business; instead of scoring O(1) points per hour, a small software team may "score a point" every couple weeks or quarter or year. Additionally, the number of people contributing is often greater, and we see fewer "identical lineup, but with player A swapped out for player B" situations (and ~never for long enough to get meaningful stats about "points scored").