Ok got it, by IT cut you meant consumption of tier two will grow slower than metros.
May be or maybe not, IT is not there in most tier 2 cities . India have 8 metros and 80 tier2 cities and maybe 600 tier3(if we blindly label all district headquarter as tier3 or above). In most tier2/tier3 cities people's income is either from some local industry or govt jov. I am betting on the fact that people of tier2 cities haven't yet started eating pizzas like people in metros, they will learn to eat soon. In short term, yes you are right, few tier2 cities are impacted by job loss. After 5 years IT workers of metros will also loose jobs with automation of more skilled works. But these reamining tier2 cities' folks ie people serving local industry or serving govt will never loose jobs.
I am not betting it to grow like it has grown from 2005 to 2015 but definitely If we look to split it into two separate business one for tier1 , one fore tier2. tier2 cities have around 30% Inda's population whereas metros only 10%. So there is enough potential for growth and eventually become a bigger business than tier1. Even if it grows rapidly in tier2 the overally growth will be 15-20% because of stagnant tier1 part of the business.