It is heartening to see the results. I have this one year old article [0] and an info-graphic which shows what other countries are doing [1]. As usual, the trouble seems to be in implementation. Speaking from experience here in Bangalore, plastic bags have decreased in availability but not disappeared :-(

One highlight: Ireland introduced a tax on plastic bags in 2001(!) and usage dropped 90%.

[0] https://economictimes.indiatimes.com/news/politics-and-natio...

[1] https://economictimes.indiatimes.com/img/64410700/Master.jpg