A lot of this also depends on the level of entrenched editors on the projects. Big/Medium budget films (and big budget TV) are usually cut by seasoned veterans who have only lived Avid in their long careers. Medium or Indie film, advertising and most TV production is in the Premiere world these days. Most people working on these started on FCP7 and then migrated to Premiere when Apple initially launched iMovie Pro (I'm in the group). Finally there's the social media kids who are a total mixed bag, most of which started editing on whatever free software they could find at the time.
FCPX is leaps and bounds better then when it launched, and there's no denying the value of it's one time $199 purchase price. But remember that price is only made possible by having a multi-trillion dollar company behind the software. I still chuckle that you can spec out a $50,000 MacPro editing behemoth, and you still have to pay $199 for FCPX. You couldn't just toss that software in for free with my purchase Apple? No other company could offer a software package at this level of polish, with endless free upgrades over a decade+ besides Apple.
Right what I said. I haven’t used FCP since 7. The key benefit of Premiere is that so many parameters can be keyframed very easily and when I need to mask or comp something it can send a timeline into After Effects and back again with a couple of clicks. That integration means I couldn’t leave it even if there was a better NLE. I don’t need to spend on Avid, Resolve doesn’t integrate quickly with something like AE and neither does FCP.