To some extent there is self-confidence, but to another extent there is confidence in crony capitalism.perhaps a hint to that is in the answer given by TVS group chemplast amalgamation chairman who was posed similar question years back reg. the ambanis, and he replied that the other business-groups dont have that "risk-appetite" to venture into big-ticket businesses, and they are more of "conservative business families", while ambanis/adanis are able to take high debt/equity ratio (and the latter also using more community & co-businessmen funding than the former). most of the traditional business houses are not taking risk to go and invest in unchartered territories and domains whereas ambanis and adanis are ready to take higher risks and proved that they can be successful with their models.
In today's world financing becomes the major roadblock and the best business-man is the one that can convince the entire world to give him loan.
Anyway, the issue with this approach is that you are effectively reducing competition (long term inefficient means of running economy) and you are creating huge risk for retail investors (and retail debtors - like savings bank holders) who have no idea about the thin ice on which these business fundamentals stand (for such enterprises)