Telecomunicaciones y tecnología
SoftBank CEO: Top two U.S. mobile operators hold oligopolistic position
Earlier, Son declined to comment on reports that his company's subsidiary Sprint Corp was looking to buy U.S. rival T-Mobile US.
He also declined comment on U.S. regulators' reported skepticism about a potential merger between Sprint and T-Mobile.
(Reporting by Sophie Knight; Editing by Dominic Lau and Edmund Klamann)