Since when do we have to give a **** about Abobe?
Aside from their Creative Suite (which will be unaffected), do they make devices? Do they make operating systems? Do they offer a complete hardware/software ecosystem?
No.
They just make industry-specific software. If it were all to go up in smoke tomorrow someone else would pick up the slack and life would go on. Who knows, Quark might get a second chance then. Pixelmator might be taken to the next level. The possibilities are legion.
Right, so you're saying that there's anything in the world that could even try to hope to replace Adobe Photoshop? Without Photoshop, there would be no professional digital photography today whatsoever. If Adobe would stop making applications for the Mac, the Mac platform would be gone. Macs are heavily used by professionals, and they use it for creative things, i.e. Adobe programs. If Adobe stuff only worked on Windows, all the professionals would switch to Windows in a matter of seconds. Most Adobe applications are industry standard. It is in no one's interest that Adobe and Apple go into a bad relationship.
Remember, the Mac isn't just a cool-looking, very expensive computer for rich dads who want to make cool-looking slideshows of their kids. It's also about supporting industry standards such as RAW files, Final Cut Pro, native support for PSD files, etc... All these show that Macs were made to work with creative software. Adobe is the leader and almost the only company in creative software.
Now no matter how much Apple hates Adobe on their mobile devices, they simply can't let that hatred go onto their computers, because that will be the end of Macs as creative computers. Oh right, you'll still have iPhoto