What exactly would be the problem with a government or a lot of people "snatching up bitcoins"?
I'll have a crack at answering this one but I'll ask readers to bear in mind my limited understanding of the bigger picture.
If what you're referring to is what the OP is about then what they'd be buying it for is to put into cold storage as a reserve fro the Indian Rupee. As I see it this is not an increase in distribution nor use for commerce.
In order to buy a proportion that would make any kind of impact on the overall value of their reserves they'd need to buy well more than is currently available at Mt Gox. All I can see the impact being therefore is a massive inflation of the bitcoin price over a sustained period with an accompanying reduction in bitcoin available for everyone else.
Of course the divisibility means in one sense it doesn't matter but without being able to justify my feeling about it I would be a lot more comfortable if the cause of such an increase in price and reduction of Bitcoin available to purchase were to happen in conjunction with wider dispersal, more and more geographically distributed nodes and minig outfits and more time for the software and Bitcoin economy to become more robust.
I would also be more comfortable for me, should central banks eventually decide to use Bitcoin as a reserve, if it were much more highly valued and distributed first. It just wouldn't feel right for me for a single fiat-issuing entity to be the primary beneficiary of all subsequent growth in Bitcoin value.