Pros just use what they're told. Don't think they all have some magical grasp on power training. They'd still kill us without any of the tech. Sure, some of them will be tech wizards and training gurus and for each of them there'll be someone who just goes and climbs hills until they're tired.
Also don't underestimate the detail that a lot of amateurs look to when chasing improvements. Times are changing but quite a lot of British TTers have done more aero testing than a lot of the pros, for example.
Look at Strava at any pros who log all their rides and you can easily see what the base difference between amateurs and pros is - time spent on the bike (and i'd imagine quality time spent on the sofa recovering instead of holding down full time jobs).
Pros just use what they're told. Don't think they all have some magical grasp on power training. They'd still kill us without any of the tech. Sure, some of them will be tech wizards and training gurus and for each of them there'll be someone who just goes and climbs hills until they're tired.
Also don't underestimate the detail that a lot of amateurs look to when chasing improvements. Times are changing but quite a lot of British TTers have done more aero testing than a lot of the pros, for example.