atm, the finance ministers are only asking for an investigation into the ban of the note due to the possible corruption & laundering using the notes.
If the governments wanted to take control, they would ban cash & notes immediately, there'd be nothing anyone could do about it, if it was a world wide determination. US have had large notes recalled for years, there's no major issue, especially as most have said, 5 100 notes in your pocket is no big deal & at no point do you need to carry this amount around with you or you're looking to be robbed
https://www.theguardian.com/business...uro-note-crime