Fairly nonpolar

So in referring to certain types of reactions as either reactions that reach chemical equilibrium or go to completion. The problem I have is that equilibrium reactions can have extremely high equilibrium constant values, like the reaction 2H2 +O2 <=> 2H2O which has a constant of something like 10^80 if I'm not wrong. So is it correct to say that all reactions are in reality equilibrium reactions, it's just that some have an extremely small concentration of reactants when the reaction reaches equilibrium?