TV producers overseas have discovered the secret of beating exported American TV shows. Hint: It lies in attracting viewers. Confused? Here's another hint: "foreign viewers often prefer homegrown shows that better reflect local tastes, cultures and historical events." Still don't get it? Okay: The secret to overcoming the power of exported (and often overpriced) American culture is to compete with it by producing better or more appealing movies, TV shows, and other such artifacts.
Of course, if you can't do that, or if your cultural industries have lost interest in attracting a real audience because they are subsidized, you can always do the next best thing and decry "cultural imperialism."