Still don't know why everyone hasn't ditched Pro Tools and migrated to Studio ONE. It's simply better , easier, cheaper ....
The answer is because of what Pro Tools does that S1 can not.
If you're genuinely curious, I touched on some of this in the "What is the best daw for recording" thread, but I'll save you the trouble of having to go back and weed through the pages of posts on this thread. While both are a great option for music recording, there are several key areas where Pro Tools addresses the needs of large studios in ways that S1 can not. These only apply to big studios though. I stand behind the belief that S1 is a very capable professional tool for music recording.
- Pro tools can be placed on a multi-machine network and stream data from an Avid proprietary centralized file repository within a facility. S1 can't.
- Pro tools has high end hardware consoles that are designed for large scale post production work. They enable operators to access essential workflow features from a control surface on a deeper level than anything currently integrated in S1.
- PT has extensive workflow editing capabilities that S1 does not.
- Pro tools can be placed on a multi-machine synchronization system as its sync and clocking options are more advanced than S1's. The flagship Avid i/o hardware and peripherals have the ability to communicate with broadcast and cinematic specific video formats that are not compatible with S1.
- My understanding is that a Presonus console/interface system can not be scaled beyond 128 inputs because they have no way of accessing sufficient throughput. This an instant deal killer for large studios.
- Presonus does not have cloud storage network in place
- Studio one is not surround sound, Atmos, or ambisonics enabled. You can jerry-rig a surround bus by creating six stereo busses, but you will not be able to use your surround verbs, object panners, fold matrix, or monitor management tools. S1 has a 2 bus and that's it. You need a proper surround bus to do anything other than consumer music mixes.
- Neither S1 or any Presonus hardware has machine redundancy or emergency power fail-safes.
...there's more, but that's a basic overview of main reasons S1 is not used in any major studios.