When a concentrated NaCl aqueous solution is electrolyzed, what is the reason for the stabality of the products to be lesser stable as of thermodynamically, with respect to the reactants?

Question

Is it because the products are gasses?

H20(l) +4e--->H2(g) + 2OH-(aq)

2 Cl-(aq)--->Cl2(g) + 2e

Or is the change of the value of enthalpy for this reaction is positive.(we are thought that USUALLY(not in all cases) ,if the change in enthalpy ∆H is positive the products are not very stable)