> they also have the POS systems in place to just replace visa/MC if they want. Yeah, that's not how it works. Banks that issue cards contract with intermediar

> they also have the POS systems in place to just replace visa/MC if they want. Yeah, that's not how it works. Banks that issue cards contract with intermediary card networks like Visa/MC, not POS system vendors. > integrating bitcoin lightning network soon Been hearing that for years. Basic problem is while merchants would love to have lower fees, consumers don't have a powerful incentive to switch off using cards. The usual argument is they would save ~2% on prices but there is actually evidence that this would't necessarily happen. When Australia regulated down processing fees, the savings were not passed onto consumers.