That's a trite disclaimer. If the economy as a whole is growing at N%, and the price of equity in the economy is growing at M%, eventually the two WILL converg

That's a trite disclaimer. If the economy as a whole is growing at N%, and the price of equity in the economy is growing at M%, eventually the two WILL converge. At what overall level & when that happens is difficult to predict, but unless you think nominal GDP is going to grow at 10% in steady-state, steady-state stock returns of 10% are impossible.