"Lost in a crowd of greats, not a single Oscar. That's showbiz"

In this quote, Maureen O'Hara is expressing her dissatisfaction and disappointment at not getting an Oscar despite being surrounded by other talented people in the entertainment industry. She seems like she is just another face in the crowd, not sticking out enough to be acknowledged and awarded for her work. This highlights the competitive and aggressive nature of show organization, where even the most skilled individuals can be overlooked and overshadowed by others. O'Hara's usage of the expression "that's showbiz" recommends that this is simply a typical occurrence in the industry and she has actually come to accept it, despite her frustration.