Understanding Indian IT Companies (TCS, Infosys, Wipro, HCL Tech, TechM)
An excellent infographic of the top IT/ITES providers in the country.
The bulk of the revenue comes from abroad, and this seems to be a problem. As technology keeps getting more simpler and easier to adopt, the reason to outsource the contract to another country will keep going down.
Combine this with the recent spate of visa issues, and you have one impending slump in the near future.