I dunno if they'd put the precursors on the watch list because it would cause problems for legitimate manufacturers wouldn't it?
Not sure it would cause problems really - if firms had a need for it, they would have the appropriate licence and not have any problems. If that factory in India was producing a metric tonne of it on a regular basis, that is clearly a vast amount and I personally doubt that we will see such large quantities available again. If the laws have changed etc then I'd expect people to be deterred - lengthy time in an Indian prison would not be a walk in the park! Be interesting to know what Mr Big Time gets when his case reaches court over there.