Many of the nobles had much to say about Alexander's speech.
On the matter of labor, well the shortage was really only local, restricted to Zanzan city and its vicinity.
The nobles had plenty of free hands in their own fiefs and should they wish, they could easily encourage some of the farmers to move to Zanzan, thus relieving the pressures.
As for the problem of increased wages and rising cost of living, well that was easy- just fix them!
In fact, this was their preferred of doing everything!
If food or groceries reached untenable heights, they would simply force suppliers to sell at a pre determined price.
And if anyone dared to challenge it, well they would get their heads bashed open with a large stick.
Easy, simple, but certainly not that effective.
The nobles thought about it like this because they did not fully understand how pricing worked.