the problem of time lag on open markets

I am by no mean skilld in the science of economics, so perhaps are these thoughts very naiv or already well understood. But anyway, here goes. I suspect there is a huge problem for a market if there is a substantial lag between an investment and a possibility for a rational actor to gauge the outcome of that investment. It would seem to me you will get to some kind of predetor-prey kind of dynamics that has clear instabilities.

Transparent pricing

I have a which for an updated pricing methodology. Today in Sweden, prices are simply stated and if you state the price except VAT, it is required to be stated and in shops for consumers (not sure what that means) also the price including VAT has to be given. But that's it. I would like a much more detailed pricing description, e.g. how much is profit, how much is payed to the suppler, and further, what are the suppliers costs. E.g. similar to how lifecycle analysis is done, but to the pricing. This would severely increase the consumer power.