[Cheesehead]

To be clear, clip gain has been used in NLE for video production, in other DAWs used in audio post production, and was even part of the AAF/OMF interchange format way, way, way before Pro Tools added it.

Clip gain, along with clip FX was in Avid Audiovision in the 90's!
Avid have been chasing their own tail for years.
We finally got Clip gain & Clip FX in PT fairly recently, relatively.
On the plus side at least PT 2019 is now as stable as Audiovision was in 1998 and admittedly doing a lot more heavy lifting sound-wise.
That could well have a lot to do with the massive increase in CPU power in the interim of course.
Don't get me started on folders in the clips list (also a feature of Audiovision).

Really.. a flat list of hundreds of individual clips in each session's Clip list with no way to organise them... in 2019!
It is almost beyond belief.