IPBiz notes that this is another example of the split message on plagiarism: it's very bad for students, but not so bad for adults. Among others, the Harvard Crimson has commented upon the dichotomy.
Lest we forget, page 68 of the April 2004 issue of the Harvard Business Review contains the following:
Plagiarize with pride.
Softball competitors like to think that their bright ideas are sacred. But hardball players know better. They're willing to steal any good idea they say --as long as it isn't nailed down by a robust patent -- and use it for themselves. Ray Kroc didn't invent McDonald's; he took the idea from brothers Dick and Maurice McDonald when he bought their small chain of burger joints. Home Depot founders Arthur Blank and Bernie Marcus didn't invent the first warehouse-outlet hardware chain; they got the "big box" concept from their earlier employer, Handy Dan Home Improvement.
[IPBiz notes that Orlando's "plagiarize" sign is close to the home of LBE's best friend from William R. Boone High School. Times have changed.]
Cross-reference: Larry Ebert, Wilton, Connecticut