If IR buys MEMU, EMU train sets from private players, with fast electrification DEMU rakes will get obsolete in comming days, Kolkata METRO after frequent breakdowns of MEdha rakes will in future buy rakes from Private players, already the new rakes for East-West metro is from private players. Then what will the Railway production units do which Government is bringing under 1 Nigam. Then these Production units will slowly move toward Loss as IR will not buy MEMU ( Now RCF mainly produces MEMU rakes) and EMU ( Now ICF mainly produces EMU rakes), DEMU ( will become obsolete in future), Kolkata METRO ( ICF produces coaches for KM) and maybe in future Mail/ Exp LHB coaches also being procured.