The GOW and the Wizard of Oz

I often find it easy to compare the plot of The Grapes of Wrath to The Wizard of Oz. Each plot possesses a sort of conflict that each character is trying to relieve. With Grapes of Wrath, we see that the Joads are trying to move to California due to rumors of job abundance and easy living, but they soon find that not everything is as it seems. With the wizard of Oz, where we see Dorothy, the scare crow, the tin man, and the cowardly lion heading to Emerald city to quench their needs, but come to find out, the wizard is a fake. From a spiritual stand point, the moral is completely identical: you had what you needed all along, and not everything is what it turns out to be.