Why did Hinduism never become an 'organised' religion like Christianity or Islam?

The topic of this thread is a blunder in itself bhai KHUSHDIL, hinduism is not a religion in first place, the name of religion is Sanatan Dharma, or the ancient religion. And whatever is written in VEDAS cant be connected to so called hinduism at all. Coz the only authentic scripture of Sanatan Dharma or what U call hinduism is SHREEMADBHAGVADGEETA.

And I m not a muslim, but a KAFIR.