It is that even if the fee is around 4-5 lacs, a middle class student might be able to manage it withot a loan or take just 1 or 2 lacs as loan. With such a hike, a middle class student has to finance almost his whole fees through loan only. The only people benefitting from this are the banks who will now give out more loans and receive interest.
Small hikes each year would be more appropriate than increasing it 2-3 fold in one year.