LONDON, May 19 : Apple hopes to enter other markets after securing a five-year U.S. streaming deal to show Formula One races on Apple TV. Yet differing media rights cycles may act as a brake on the $4.37-trillion tech company’s global ambitions. The Liberty Media-owned single seater is a popular live sports championship amongst fans, streaming services and traditional broadcasters. “We have a buy on F1. I think you can really see that the sport is exploding in popularity. I think it's gaining