[CAPTION](File) A branch of AU Small Finance Bank in Mumbai. Image: Indranil Aditya/NurPhoto via Getty Images [/CAPTION] Last evening when news of the AU Small Finance Bank’s universal banking licence came in its founder Sanjay Agarwal pointed to the fact that he had been ‘irrationally rewarded’. After all, by his own admission, here was an entrepreneur from Jaipur who had started a business in 1995 with no connections and no background in lending. Now, three decades later, with i...