"L's" in Japan?

In Japan and in Japanese they cannot pronounce "l's". Even in English writing (not Japanese characters) their words are spelled with "r's" instead of "l's". If you get a Japanese language book you will see that not once there is the use of L. Whenever I talk to one of my English speaking friends who is Japanese they say words like "rove" instead of love and "rean" instead of lean. They just cannot pronounce it. It is so funny listening because that is not how I am used to hearing people talking. All of the restaurants that have "l's" in them in America are pronounced with "r's" in Japan. Like a popular one, Red Lobster. They actually had one of those near where my family lived. They pronounce it Red Robster in Japan!