Edison was the forerunner of the current crop of patent trolls/NPE's/IP lawyers, and many of them worship at his altar. Steal what you can, and make use of patent jurisdiction to maximise monetisation.
His greatest "invention" was not what he's usually know for, but setting up modern laboratury structure by setting up the contracts that had people sign away the rights to their own discoveries,"*and* non-competition clauses. And employ PR and FUD in the modern sense. By all means, not a Nice Man, and most certainly not "the greatest inventor who ever lived".