Here are the top companies in India. What I noticed is that they are all oil, gas, car, and steel related companies.

1. Indian Oil Corporation
2. Reliance Industries
3. Bharat Petroleum Corporation
4. Hindustan Petroleum Corporation
5. Oil and Natural Gas Corporation
6. Steel Authority of India Limited
7. NTPC
8. Tata Motors
9. Tata Steel
10. Sterilite Industries

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If you now compare the list to USA, you will see that there are more variety of companies. For example, retail store, banks, and telecom companies.

1. Wal-Mart Stores
2. Exxon Mobil
3. Chevron
4. General Motors
5. ConocoPhillips
6. General Electric
7. Ford Motor
8. Citigroup
9. Bank of America
10. AT&T