- Tesla - SpaceX - Amazon - HP - IBM - Dell - Oracle - VMware - Palantir - Priceline - Expedia - Yahoo - Groupon - TripAdvisor - Symantec - Fiserv - Intuit
There could be many reasons. Maybe they weren't invited to participate, maybe they choose to stay out of a political discussion, maybe they thought it could hurt their business interests, and maybe they didn't fully or partially agree with the amicus brief.