Most economists do not even have to take so much as a rudimentary accounting course in order to get their degrees in economics.
Most economists have never been businessmen.
These two facts tend to make them blind to where to look for the empirical data which would enable them to decipher the most basic problem of the system itself, and also that the system itself, in its normal operations, is going to continue to manifest this problem no matter how much you regulate it/inject inputs into it….because to do so simply re-initiates the problem. In other words the solution is to go around the system and directly to the individual with the inputs first to correct the part that is afflicting the individual, i.e. a scarcity of total individual incomes in ratio to total costs/prices, and then in order to correct the system itself, utilize a costless means of lowering prices….because systemic costs are already inherently more than individual incomes, and only a gift of price reduction to the individual is capable of equating those costs/prices and then that reduction given by the business must re-gifted back to them….so they can survive.