It is not easy to proclaim a message of change. People do not like to change. The Seerah of the prophet sallallahou alayhi wasallam will tell you. Quraish could not digest the new concept of lordship and godship he brought, the new way of life he presented. They were not ready to give up idolatry, tribalism, gambling, alcohol drinking and adultery. They were not ready for freedom, for equity and equality.