(23)Whereas it is not indispensable in this Directive to harmonize the ways in which investor-compensation schemes are to be financed given, on the one hand, that the cost of financing such schemes must, in principle, be borne by investment firms themselves and, on the other hand, that the financing capacities of such schemes must be in proportion to their liabilities; whereas that must not, however, jeopardize the stability of the financial system of the Member State concerned;