I wonder if that observation depends on how fungible the output is. I also have a point of contention in that 50% of the work is not necessarily the same as 50% of the created value.
Wikipedia also fixes the definition of Price's Law to be specifically around authors and their publications [0]. I can see the relationship that author is trying to make, but I'm uncomfortable to how the article conflates the generalization with original definition. The original definition is also related to Lotka's Law, which is also about publications [1].
I also just watched the Jordan B Peterson lecture linked in the article, and it sounded to me that he chose to make the same generalization [2]. He correctly calls it out as being restricted to creative work, but then goes on to make connections to goals scored in team sports like hockey and basketball. I think part of the problem in all of this is the attribution of effort with the overall outcome.
Taking Peterson's example with hockey, you can try to have an all-star team of just goal-scorers be on your hockey team including your extra players, but good luck trying to qualify for a championship. "Alright fine", you say and you get two-or-three bespoke goalies on your team. You more likely to qualify now, but given the typical builds of goal-scorers and how often they get injured, and comparing that to players who play defense, now your problem becomes having a team that more injuries than average, and suffering performance-wise as a result.
Certain kinds of success can be acquired through iterative attempts at amassing fractional results into one pot. Other kinds hinge binary do-or-die outcomes. Resilience and longevity comes from striking the correct balance between the two in any situation.
[0] https://en.wikipedia.org/wiki/Derek_J._de_Solla_Price#Scient...
[1] https://en.wikipedia.org/wiki/Lotka%27s_law
[2] https://www.youtube.com/watch?time_continue=16&v=UmUdcWk6Vfw