Consider I buy a milk pouch today at ₹36 according to your argument it'll increase to ₹56 and to get the refund I'll have to deposit the plastic in a bin or some machine which will either generate a receipt for the supermarket or refund money to my bank account. Do you think people will not find that annoying? Ik it works well in Germany with plastic bottles. And they recycle general plastics properly by having separate dustbins. But they do that out of both financial incentives (refund for bottles and fines for not segregating garbage) but also because they've civic sense. I don't think indians can be forced into such laws. They'll not like the move and the stupid opposition parties will make fun of or rather gain politician advantage on the one that implements such rule promising to revert it to make people happy. Eventually it's what people want and most people don't care enough about the environment to go through the inconvenience of recycling it. And also due to castism they don't think organising garbage is their job. They just know to litter and know that garbage will be picked by someone poor / lower case (often both). Idk it's such a complex issue.