I welcome this step, if it's true.
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2. Banks run on fees from people not having financial discipline. And they share some of those benefits with us (this entire forum). A higher limit encourages the poorly disciplined people to spend more and earn the bank more. And in the end people like us in the forum benefit from it. That's the entire CC business.
8. You mostly want the rich people's money from cities, as they spend more and the shops there are ready to give up 1-3% of the invoice cost to MDR.
9. ITR should not be linked with CC spends. You forgot that my dad can transfer any amount of money to me to spend on MY card. What are you planning to implement next, a social credit system?
Think about it. Banks are lending for 60 days interest free almost. If they don't have any incentive to earn apart from the MDR then all rewards will vanish and this forum can be shut.
And what you are suggesting is essentially enabling a nexus-mafia of such banks to form instead of allowing smaller banks to innovate. Some of the fintech apps are genuinely nice, some of the smaller banks (e.g. IDFC First, when it started issuing CCs) are much better than the biggest card issuers like HDFC, etc.
In the west, economy thrives when rules are removed (deregulation), not added.
HOWEVER, I agree with RBI's actions for NBFCs. Too many smaller entities and the loans from the NBFCs are too accessible, creating a systemic risk.