I suspect Airbus, Kawasaki, Alenia, and Lockheed at a minimum could make powerful arguments against the above notion.
I'm sure that they would. But "flying ops in three years" means "flying ops in three years" in the Queen's English. Since nobody appears to have started on the process of having a competition or evaluating anything (other than the P-8A's eval-via-Seedcorn) the process would have to begin by writing a requirement. inviting bids and evaluating them. Airframes would have to be built or modified, and tested to the extent that any OTS system available matches the requirements. Three years is a ludicrous impossibility, which is why "we must have capability in three years" = "buy P-8s".