UA is stuck in the US bubble, and it really suits american sports actually, Nike & Adidas are more stylish so it's suits us europeans more (on a cultural note). UA have a LONG way to go before even making a dent in European football, they'd need to sign up Messi or Ronaldo, or get one of the big 4 clubs, and even then.. it won't be enough, they'd need to destroy the two most successful sports brands in world history. There isn't room for 3 big players, hence why it's always been Nike-Adidas.. then Puma/Umbro etc battling it out amongst themselfs.