Honestly, Lightroom has been better than Aperture overall for quite some time. But LR is not the only one out there. For those who do not want to use Adobe there are other possibilities:
1. Iridient Developer
2. Photo Ninja
3. Bibble Pro
4. Capture One
5. DXO
6. RPP
7. SilkyPix
And that's just off the top of my head. There are others out there. Each slightly different. And Nikon's new Capture NX-D will be free and should work with Nikon files and it's based on SilkyPix.
It's not the end of the world. The only "bad" thing is if Apple stops with any future raw file support. Inconvenient but not unsolvable.
Meh. Even with those alternatives I still believe Adobe have the monopoly. I think I'm gonna pull the trigger on the photography CC subscription. I bought Lightroom outright last year but could never afford Photoshop CS6. This will be the perfect way of allowing me to have the two best photography software suites on the market.