It seems that you are saying here (and in further statements) that Arabia was full of people ready and willing to embrace a message sent to them from Allah. But the reality was that they had filled the kabah and their homes with pagan idols that they worshipped as gods and they rejected the message of the Prophet (pbuh) for a long time, as evidenced by his need to escape and move those few who had followed him to Medina for their safety.