It is difficult to say when the Jainism reached the southern peninsula. This evidence and Bhadrabahu's travel to the south suggest that Jainism reached southern India in its early period. Thus promotion of Jainism seems to be done actively in the past. Promotion of the teaching of Jinas is one of the duty of a Jain. Hence the promotion of Jain way of life is our duty.
People accept it by our example.
Other faiths have been successful because of their infrastructure and trained personal such as clergyman, rabbi, imam etc. We have hardly any persons who can present Jainism in the modern context. We will have to train academics and other people and that requires resources.