Tesla is sharing any relevant IP on 4680 and Tabless.cells.
It is relatively easy for Panasonic and LG to covert existing factories to make these cells.
Perhaps slightly harder for CATL, who probably don't have factories making cylindrical cells.
All EVs will start to migrate towards 4680 and structural pack when they can do so.
4680 might more or less become the industry standard and start to obsolete prismatic packs.
So tabless 4680 is accelerating the mission across all EVs.
Likewise Tesla is probably sharing Silicon Anode tech with Panasonic and probably LG, again that is because Tesla wants them to make cells with that Anode and this probably extends to many of the other chemical properties of the cell.
How much of that can be used to help other EV companies isn't clear, a lot of the information can be got from teardowns, but Tesla owns the IP and can protect it to some extent.
Tesla may not sharing:-
- DBE
- Castings Alloy...
- Cathode Process
- Formation Equipment
...