every industry is regulated to a certain degree, but categorizing an industry as a utility is a step change difference.
in the US we do not regulate interchange fees except via Durbin Amendment (only passed 10 years ago) which regulates debit interchange for large banks only. this is totally different from Europe where interchange is heavily regulated.
E.g. https://www.fdic.gov/regulations/laws/rules/6500-2260.html https://www.creditcards.com/credit-card-news/help/card-act-1... https://blog.payjunction.com/credit-card-processing-regulato...