The logic of the crisis of overaccumulation is explained through the model of the cyclical nature of capitalist development.  In general, there are laws for the fall of the average rate of profit.  But this should not be taken literally.  The average rate of profit does not fall linearly, it is subject to cyclicity. This means that at certain historical stages the rate of profit may rise, while at other periods it may fall.  Why can it rise in a short span of time?  This is due to the introduction of new technologies in capitalist production.  In conditions of a deep crisis, capitalism seeks to master a new technology that will increase labor productivity.  Those who can master technology before the rest and introduce it into production will receive additional advantages relative to their competitors.  Capitalism begins industrial expansion, leading to an increase in investment in fixed capital.  Those industries in which new technologies are being introduced give the largest profitability to the largest investor, stimulating the influx of new investments into the industry.  Since capitalism is a collection of disparate producers, each of which focuses only on its own personal profit, it is not interested in the state of the system as a whole – at some point, the problem of overaccumulation arises. That is, there is so much capital that the products made with the use of this capital do not find their realization, i.e., effective demand is not able to digest the entire volume of products produced.  The problem of overaccumulation arises, the rate of return begins to stagnate and even fall. And this starts a new cycle of searching for new technology for investors who try to overcome the problems of overaccumulation with its help.