Successive WB state govts. have done this one thing intelligently, they have reviewed the municipality rates of land with market prices roughly on a quarterly basis and kept the rates at par with the market price, or more as in Kolkata. Black money is still involved to evade income tax, but people can't cheat government on registration fee and stamp duty, since these are taken on municipality/corporation rates. If other states don't follow this policy, then they should pick it up from Bengal instead of following Bengal's other stupid policies that your kinds seem to like so much. AND, frequently reviewing the land prices is states' job, central govt. can't do this for you. Don't pass on state govts. faults on the central govt.
Second, farmers will get 4 times the land price, this is to cover the future price hike due to new industries. This also shows how new industries bring prosperity to a place.
Lastly, I repeat, the law is not mandatory on states, if the Congress ruled states don't want the law, fine, but how the hell they prevent other willing states from having that law? Why do you care if any other state wants a industrial corridor?
It is because of such pathetic policies that Congress has been stripped in the last election, now they want to force their regressive policies on a BJP govt., simply pathetic. And simply pathetic are their bootlickers.
Shameless.