At a more general level, the topic of dual-class shares (with differential rights) has received some attention with Facebook’s proposal for a public offering with dual-class shares. The Economist has a report on the success of dual-class shares in the markets. Note that dual-class shares act as defensive mechanisms favouring holders of shares with superior control (voting) rights. Here is an extract:
Over the past 20 years firms with dual-class share structures have accounted for around 7% of IPOs, such as that of Visa, a credit-card company, last year. Studies by Chad Zutter and Scott Smart, economists at the University of Pittsburgh and Indiana University respectively, have found that dual-class IPOs tend to be priced at lower price-earnings and price-sales ratios than comparable single-class IPOs, suggesting that there is a penalty. But it is surprisingly small.This seems to suggest that the way forward (even in the Indian context) would be to allow dual-class shares or shares with differential voting rights (along with predetermined checks and balances) and then leave it to the market to price these shares accordingly. That would be a more optimal approach than to ban these instruments altogether.
One likely explanation for this is that most public companies in America used to have powerful poison pills that protected management from hostile takeovers no matter what their share structure, says Jay Ritter of the University of Florida. They also had supine shareholders. Both of these things have changed in the past couple of years, however, as doughtier shareholders have agitated against poison pills. So perhaps Facebook will pay a higher price than it expects for its dual structure.