Today, the copy protection consists of:
1. The installer phones home to see if your serial is blacklisted. If Apple can't be reached, you can install it anyway (unlike activation).
2. Serials are blacklisted with each point release
3. Offline update install packages are behind a serial-wall on Apple's website, but are accessible with the system Software Update utility, which does not check serials.
4. Logic Pro broadcasts its serial over Bonjour, and won't start if another system on the local LAN is using the same serial
This is by far and away the most lax copy protection system of any of the professional DAWs. The primary copy protection is that it's mac-only, and the people who blow $2k on a mac aren't likely to balk at a few grand on good software.
And yes they do care about controlling the users, they just use other ways to enforce that (appstore, hardware lock-in)