Why were Mohammed's ideas unpopular in Mecca?

Mohammed's ideas were unpopular in Mecca primarily because they challenged the existing social and economic order, which was heavily tied to the polytheistic beliefs and the lucrative pilgrimage trade centered around the Kaaba. His monotheistic message threatened the power and profit of the tribal leaders and merchants who relied on the worship of multiple gods. Additionally, his calls for social justice and equality undermined the traditional hierarchies and privileges enjoyed by the elite, leading to resistance and hostility from those in power.