I am 100% down for sailing the high seas. But let's not sugarcoat it, this analogy is always been kind of crap.
Somebody went to your mailbox took out your paycheck, made a copy of it, put the original back in your box, went to the bank and cashed it.
Theft still took place. You're probably still getting paid. Maybe it got taken up by insurance and everyone's premium goes up a tiny fraction, maybe it got taken up by the bank or by your business.
It's still an incomplete analogy but it's a little bit closer.
That's not to say that the vast majority of piracy isn't people who wouldn't pay anyway. And back in the day, you certainly got more visibility in your games from people who were pirating.
But now that advertising is on its toes and steam exists, I won't think they're getting any serious benefit from piracy and I don't think that they're not losing At least modest numbers of sales.