Why are IT firms fleeing Bangalore?

http://economictimes.indiatimes.com/articleshow/msid-793907,curpg-1.cms

Highlights:

Azim Premji seemed frustrated by Bangalore's poor infrastructure, high rates of employee attrition and fat salary bills as he followed up his company's result to say that Wipro's future investments would be made outside Bangalore for "there are opportunities outside Karnataka where talent is available, infrastructure is better and wages are lower".

Though Murthy seems to see the sunny side of Bangalore, the reality remains that the garden city where the average temperature never used go beyond 25c is in one of the worst stages of climatic transition with pollution choking the breath out of Bangloreiets. Water scarcity, power failures and a very industry unfriendly work culture are driving IT and BPO firms like Wipro, iGate and MphasiS to look towards cities like Chennai, Hyderabad and even Hubli, to expand operations.