Personally I don't see a lack of ethics - the people aren't owned by the company. They have no obligation to the shareholders. Now any IP the shareholders do own and they would have an obligation towads if they want to use it as an IP holder in the system.

(Hypothetical Alpha Centuarians observing and pirating the tech would have no ethical issues at all, there is no social contract, they aren't even accessible and couldn't pay even if they wanted to being lightyears away but that is a silly tangent.)