This necessitates collaborative information synthesis to resolve uncertainty uniformly to then be able to play a positive sum game under constraints. This is possible but it necessitates exchange of information between different business functions.
As informational clarity is a communicative process with repetitive feedback cycles, it will tend to have a big delay in the overarching system of decision-making. Therefore a shortcut is to influence, i.e. use conviction processes to shorten the cycle, rather than repeat to arbitrary infinity in order to drive perfect information alignment.
Therefore influencing is a necessary component even in an otherwise perfectly healthy and incentive aligned positive sum system of rational actors - and politics are influencing.
The problem becomes when conviction isn’t used as shortcut for informational clarity but as a method of exploitation of irrationality of human actors - this is bad politics.
What I do agree with is that putting in place right incentives, processes and organisational structure minimises politics - and in an org with rational actors this is the goal.
But good luck hiring perfectly rational actors in each function, that will still behave rationally in an economic downturn :).