The sweetest sounds in the universe - "chai chai"

Automatic vending machines for a station handling several thousand passengers a day? An ambitious and largely beneficial plan, no doubt, but the removal of manned stalls is definitely not a good step. True, many of the platform vendors do overcharge passengers most of the times, but for many of them this is their livelihood.
And an automatic vending machine would just test the patience of most of the passengers. Getting special tokens or coupons to insert in the machine, or carefully inserting a ten or twenty rupee note, only to see the machine spitting it back because it was inserted improperly, and spending long hours in queues as the person in-front has a large list to buy.....
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such kind of a system is not suited for our railway stations.
The kind of crowds, the kind of cuisine we have in our country, are best served by people directly. While renting out station space to private players can definitely help our railways get much needed additional revenue, appropriate care should be taken for the small businesses and people eking out marginal livelihoods by selling their wares on trains. Unlike the large corporations, these people do not have other options in their hand. The railways is the sole means of their livelihood.