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> What really led to the rapid uptake of UPI was Covid and people's reluctance to handle cash as a result of it.

That timeline doesn't make sense. UPI was already a spectacular success by 2019.

In 2019 it was gaining traction, as the article shows the volume of transactions were around 1 billion per month in March 2019.

the opportunity to mine all this data by the government for any policy or intervention cannot be underestimated.

This is inaccurate. COVID solidified what was already growing in usage. The really stupid demonetisation exercise was the main factor

Good point.