John Adams

The technology company's major projects over the past couple of years have included a diversification to serve merchants' cross-channel shopping and payment needs, adding advanced ATM technology in Europe and upgrading hardware to compete with rivals such as Square.

As with most of the company's inventions, an Amazon checking account would more deeply embed customers into an Amazon ecosystem that provides an endless flow of data and efficiencies.

The Federal Trade Commission contends Venmo misled consumers on funds availability and security disclosures.

The banks behind the Zelle network had more in mind than P-to-P payments between consumers, and BNY Mellon is beginning the network's evolution by targeting the business payments market.

JPMorgan Chase and Amazon have demonstrated substantial power to digitize their industries, even influencing the strategy of others. But automating and streamlining health care will be a particularly tough task.