Adobe "owns" the digital image processing environment because, well they kick the crap out of the competition...there are some niche areas where some 3rd parties can exceed Adobe software, but very, very few areas.
And Microsoft dominates the computer business because, well, they kick the crap out of the competition?
I'll take a Mac instead of a PC any day, in spite of Microsoft's "domination"
Does Lightroom have a superb workflow? YES.
Does ACR merge seamlessly with Photoshop? YES.
Which is why most of us cannot be *bothered* to use anything else for the hundreds of images we quickly deal with.
What about the file quality?
It's very much open to debate.
I'll take DPP file quality for Canon instead of ACR's any day. The day I used it on my 1Ds2 files back then was teh day I suddenly thought I had a new camera! and even tiny cr*ppy little Danish PhaseOne's C1 did a much better job on images the last time I could be bothered using it. Myself I fire up Irident's Raw developer whenever I really really need to get the most out of a single image. Even the various dcraw based converters have things going for them.
As for Lightroom/ACR color?
Wahahaha.
Adobe makes useful solid software, if I can put it in car terms it has nice trunk space plenty of legroom, four doors, takes the shopping and the kids, starts up every time you need it, doesn't break down, and it's a Mercedes. The real competition make Ferraris - single purpose fast tools. Bad workflow, slow support for new file formats, superb files.
Edmund
Oh and by the way, with two Photoshop and Lightroom updates per SLR pro generation, guess who makes more money from that D700 or 5DII, Nikon, Canon, Apple, HP, or Adobe?
There is an old joke among PC journalists: Dell, HP, Asus make the PC, Microsoft makes the profit. Well, it applies to cameras too. Nikon and Canon and Sony may make the SLR, but Adobe makes the money. And that explains why the camera companies are running out of R&D funds, in the same way as every PC maker except for Apple ran out of money to develop differentiated products.
Edmund