Let them have this. Sony will always have a solid exclusives lineup, always. Not to dismiss MS's exclusives, I think they've been doing a pretty good job this generation, but it isn't going to hurt Sony if MS gains the hardware advantage. As long as Sony doesn't do anything stupid, and keeps their first party/third party lineup healthy, I don't think they have anything to fear with Scorpio. Sony's built a good relationship through software over the years, and I doubt they will suffer a big hit in their audience solely over specs.
I love Sony, and I'm happy for the PS4's success, but it's exciting to see the playing field possibly evened out again. This generation was a bit depressing in that regard, and I know it was MS's own bad decisions to blame, but I recall another company making similarly stupid launch decisions a gen before, and hardly anyone refused to forgive them when they attoned for it. If Sony just leaves their specs alone and focuses on the software support, this next wave of hardware could be very interesting. I know saying this might piss some people off, but it's healthy competition. Everyone wins here, honestly.
Also I want to note, as someone who plays on PC, I don't think Scorpio is in danger over a hardware focus. I understand why many dismiss a Scorpio purchase. However, not everyone has the time or patience for a PC. I feel there's still a big audience for plug-and-play boxes, and although consoles are a bit more complicated nowadays, they're still a lot better about it than a PC. Not to mention affordability; consoles will always have that price advantage thanks to software. I think the price difference between a Scorpio-level PC and Scorpio will be big enough to turn some heads. Not to say Scorpio will be a cheap console, but I think MS will make a pretty good offer.
All in all, I don't see any negatives, here. People looking for a richer library of exclusive experiences will always have Sony. Specs really don't make a console, just look at the PS2. And those who care more about third party games and visual fidelity seem to have MS to fall back on, now. I think that's lovely, as it evens it all out among the audience. I've seen so many people on the fence to buy a One and reconsider because their 4 does so much more. Now people finally have a reason to consider both and, blows to our wallets aside, I think that's fantastic to see again. I'm probably not going to get across to anyone when I say this, but let's not be pessimists about this development, let the competitors have their fun, and hell, consider jumping along for the ride.
...now I'm just waiting for Ninty to fix their mess. I'd love to see that happen one of these days.