What reasons can be attributed to the survival of Jainism as different religion?

Reasons are:
The

community’s tenacity and survival can be attributed to its intra-community bonding and relative affluence as a result of engagement with trade and commerce as its primary occupation.
the Jains “sought to outflank the bhakti movement by taking its main cult-figures as their own”
The Jain community of medieval India shared relatively harmonious bonds with Mughal ruling elite, via their spiritual leaders and affluent traders.
The community became very accomplished in the field of trade and commerce and grew affluent, which historically helped its members stay influential and relevant in medieval India’s multi-cultural society.
Strong community fabric among the Jains.