Why isn't Maggie Cheung a Hollywood Star?

Fantastic article about Maggie Cheung that seems to only incidentally ask its title question, "Why isn't Maggie Cheung a Hollywood Star?"

...why is it that American audiences know Cheung only vaguely, if at all, as the woman who fended off a torrent of arrows in the Chinese film "Hero," which was a sleeper success in the United States this summer? It's somewhat mystifying that one of Asia's finest actresses is virtually unknown to Hollywood audiences, as if celebrity were the one export too fragile to make the 7,000-mile trip across the Pacific. Cheung's English, though accented, is fluent; her beauty, universal; her talent, unarguable -- the imprimatur of Cannes confirmed the cross-cultural appeal her Chinese fans have appreciated for decades. To wonder why Cheung isn't a Hollywood star is to wonder a bigger question: why hasn't any contemporary Asian actress become a major Hollywood star?

Even were she not being closed out for being Asian, she'd be out in the cold anyway for having just turned 40 (what could be more absurd?).