Elon Musk has demonstrated on several occasions that he is an opportunist. Regarding his renowned companies Tesla and Space X.

Tesla was not created by Elon Musk. The founders were engineers Martin Eberhard and Marc Tarpenning, in 2003. It was only the following year, with million-dollar investments, that Elon Musk took over the position.

At Space X there is no denying its merit, as it was its investment that provided
for its brilliant engineers to create something revolutionary. What bothers me is that it seems like Elon Musk developed the technology and his engineers just replicated it.