Worldwide, IPO markets are often viewed as a lottery, wherein successful allottees are able to sell their holdings at a huge premium on listing. While this went well till 2008, this arbitrage has faded over time at least in India.
Post 1992 the promoters are free to price their offering as per the market demand, which resulted in promoters realizing the maximum value of the issuance. Unlike secondary market, primary market is a promoter to investor transaction where like any other business the seller tries to realize maximum value by adopting all sorts of strategy. Reliance Power was hugely subscribed and then was a huge failure because the company had nothing on ground but the promoters through their Investment bankers tried very hard to sell the future value at an exorbitantly high price. The stock is still languishing below it's IPO price.
However it's not that always bad to go for an IPO provided you approach them as investments rather than lotteries. One should always consider following points before going in for an IPO: