Same was Subaru with Prodrive, maybe tuners getting some backing from a partner Manufacturer would ease the budget effort of the Manufacturers itself, but it could help out filling the entries with...
Red Bull is part owner of the promoter. It's of their interest that M-Sport stays afloat.
SLOWMOTION | Cadillac Hypercar & Porsche 911 GT3 Cup https://www.youtube.com/shorts/nbSvtfrmaLs
Hyundai Mk 1? That was MSD.
Hyundai WRT