I cannot speak about US corporates, but this would seem to be consistent with the observation that we tend to hear from Australian liaison contacts that the hurdle rates of return that boards of directors apply to investment propositions have not shifted, despite the exceptionally low returns available on low-risk assets.
The first possible interpretation would require issuers and networks to allow a debit card transaction to be routed over at least two unaffiliated payment card networks. Under this approach, an issuer could, for example, enable a debit transaction to be routed over one signature-based network and one unaffiliated personal identification number or PIN-based network.