the values are specifically defined in article VII part B, so it's going to remain a fairly consistent % if average payroll remains consistent.
when average payroll shifts, it might change a bit? 2014-2017 it's been fairly consistent. that superficially coincides with what you said above.. not writing a research paper or anything
http://www.mlbplayers.com/pdf9/5464230.pdf
% remained steady for other reasons, then. just a product of the context. payroll is essentially limited by the cba.. defines % of profit that will be spent etc.. so, tied together loosely. still shouldn't eliminate growth.. maybe mlb hasn't grown much the last few years relative to income.
heh, further proof they are artificially stagnating salaries.. greedy bastages, all of them. (owners more so than players, of course... never fault a person for wanting more than an ort from "the man" lol - they most certainly can afford it. maybe 1 person doesn't need billions of dollars? and shouldn't. turns them into sociopaths)