Why dharmic religions like Hinduism, Buddhism etc. are not organized whereas Abrahamic religions (Islam, Christianity) are organized? For example, Islam has its mosques which dictate the way of life, dress code etc. whereas Christianity has its churches. But I don't know any such thing in Hinduism.
You are correct about Hindu Dharma not being organized (not so sure about Buddha Dharma). The reason seems to me is due to the fact that dharmas are for seekers of Truth while Abrahamic faiths are for believers. Believers in Abrahamic faiths need to know exactly what they should do in every sphere of life since these faiths do not encourage seeking but ask for unquestioned belief.
I think its difficult to compare Hinduism with other religion like Islam and Christianity, because these both are religion which follows similar kind of philosophy. While Hinduism is inherited from Aryan or Vaidic culture, Which involves variety of philosophy and belief out of which widely accepted philosophy are included in Vedas. In Hinduism there is freedom of thoughts and believes and also scope for new philosophy and scriptures.