Why is Pedro Almodovar not more successful worldwide?

I am conducting some research for my A2 Media course and in studying this film, am interested in finding out how Pedro Almodovar broke into the mainstream with his films, particularly All About My Mother? What makes it so special? And also, why can't other, similar Spanish-language films seem to do the same?

I think the main reason for his success is simply the sheer extravagance of all his films and his bravery in tackling themes that usually would hardly be touched upon such as prostitution and transexuality, in such a melodramatic way.

But if his films are so brilliant, how come he hasn't achieved ultimate worldwide success, with his films being shown alongside all the Hollywood blockbusters? Can his films not compete with these blockbusters or is there just not a mainstream/wide enough audience for his work? Or is this audience just not ready for his work?

could you please give me your thoughts on this matter? Thankyou :)