This, this, this.
You can’t disrespect your core, dedicated audience.
Apple slapped every serious, dedicated, industry director and editor in the face who used Final Cut with the release of FCPX.
The incompatibility of plugins was one thing. That we couldn’t - for the first time ever - open project files from a previous version into the new version, made it further useless for folks who would be looking to ‘upgrade’. Then there was the staggering lack of basic features.
One had to wonder what the hell Apple was thinking. There are easier ways to shoot oneself in the foot.