The redistribution of the market for the publication and distribution of academic scientific journals has led not only to serious delays in the publication of scientists' works, but also to Russia's self-isolation in the global market of scientific periodicals. By the beginning of December 2024, almost 75% of Russian academic scientific journals have not gone to press on time. This is the price of striving to publish scientific journals with a "Russian identity" and without foreign influence. T-invariant tells us what has already happened to Russian scientific periodicals and what else may happen to them.