Incorrect, the battle is partly won in several U.S. cities (including NYC & SF) which passed laws to mandate acceptance of cash.
However, cash-acceptance laws were mostly motivated by the unbanked, who are now being used to justify the introduction of nation-state CBDCs. China's CBDC is two-tier and preserves retail bank competition. People close to the current admin have proposed a 1-tier CBDC that would eliminate retail banks from payment processing, perhaps relegating them to fintech data processors.
The long-term answer is both: encourage bearer currency (cash, precious metals, zero-knowledge crypto) to anchor one edge of the Overton window with an existence proof of freedom from surveillance and kill switches, AND impose regulation on digital systems to enforce constitutional rights. 99% cashless doesn't work for tyranny, because there are escape valves. We can and must defend those exceptions, while "digital due process" is slowly constructed.
Remember when e-commerce was not subject to sales tax? For more than a decade, the playing field was not level. Today, large websites are almost unusable for buying popular items at risk of counterfeiting, and there is little online price advantage over Main Street. If you have access to a local branch of Japanese bookstore Kinokuniya (https://usa.kinokuniya.com), it's a joyful 3D curated experience vs. the chore of navigating an online bookshop with questionable reviews. The online-offline playing field is now less tilted.
Today, cashless proponents are free-riding on digital data streams whose originators lack the infrastructure for licensing or negotiation. Competition for those data streams (which feed into AI for economic advantage) is coming from {nation,city,multi}-state regulators, corporate payment networks {Apple,Amazon,Google}Pay and DRM infrastructure for data originators.
The free data ride in cashless systems, like sales tax holidays, is coming to an end.
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