The bottom line being that my argument is the one that's ethically consistent, whereas the opposite view forces all kinds of moral gymnastics to defend!
This is how I see it:
For years now, I've been gaming exclusively on PC because I decided to invest on a SINGLE gaming ecosystem, and I thought that PC was the one with the most options. I shall NEVER buy a console ever again. Thus, any company which will make a game exclusive on a console won't get my money. So, if emulation gives me the option of playing a game that I would never buy otherwise, I'll take it.
In any case, the console maker won't be getting money from me. If they would put their game on Steam? I would buy it. But I won't, until they do.
So me emulating games does not make them lose money, because I was never willing to give them money to begin with.
It's like me watching a movie at a friend's house which I would never otherwise rent or go to the movies to watch. I'm not costing the studio money because I was never intending to give them money in the first place.