Research out today from Datamonitor puts the combined revenue growth rate for the top 50 players in this market at $262bn (£142.5bn) for 2005, up 1.9 per cent year on year. However the market as a whole grew at eight percent.
The market researcher noted "larger players are losing out to smaller, more focused vendors".
The top of the 50 features familiar companies. IBM, EDS, Fujitsu and Accenture lead the way. BT Global Services overtakes Deutsche Telekom's T-Systems to rank eighth.
However, the main Indian services companies saw combined sales growth of 35 percent. They were also the most profitable suppliers in the top 50 in terms of both net and operating profit margin, and made proportionately more new hires. For example, TCS grew its workforce 68 per cent, taking on 27,000 new staff in 2005.
Datamonitor said clients are increasingly looking at smaller outsourcing agreements rather than mega-deals. Multisourcing is a recent trend.
The league table did not include companies mainly reselling products or captive IT operations.