That's not really what the FB vs ConnectU issue is about. ConnectU wasn't upset because Mark took "their idea." By all accounts he was actively working on their product.
So it's not like the Winklevoss brothers approached Mark, pitched him, and he thought, "I can do this better." He actually went to work on their product and then, later, while he was ostensibly working on ConnectU, launched a competing product.
That is, it's not "he stole my idea!" It's "he took our code and confidential information and used the opportunity we gave him to harm our business."
So it's not like the Winklevoss brothers approached Mark, pitched him, and he thought, "I can do this better." He actually went to work on their product and then, later, while he was ostensibly working on ConnectU, launched a competing product.
That is, it's not "he stole my idea!" It's "he took our code and confidential information and used the opportunity we gave him to harm our business."