This aircraft was too complex and difficult to develop without support from the Air ministry and other larger concerns, such as Fiat. None was forthcoming, and while Piaggio was still struggling to fine-tune and produce the P.108B, there were many other requests for the 'C' model airliner, the P.108T military transport, and the 'A' anti-ship versions. Finally, there was also the new strategic bomber, the P.108bis or P.133 to be developed as the "final solution" for Italian bombers, and other projects, such as the P.126, P.127, P.130 to be considered.