Elon Musk's artificial intelligence

Twitter has been aflame with a pronouncement from Elon Musk. According to the visionary entrepreneur, the odds are very high that we're all living in a version of the Matrix. The logic goes something like this: If it's possible to create consciousness out of a computer, someone, either human or alien, will have done it. If they've done it, they've probably done it a number of times (since after all computers can run infinitely many programs). If that's true, then the number of consciousnesses that are simulated is probably much higher -- even orders of magnitude higher -- than the number of consciousnesses that aren't.