Because TOTO and many other Team Principles don't want to lose money. Ford has stated they will help RB with battery and software not an actual engine. We may never see Andretti in the Club.So is HRC (Honda) doing engine development with Red Bull Sr. and Jr. teams or just there as a support for technology transfer?
Going be be a lot of manufacturers in F1 for 2026. It will be interesting to see if they finally let Andretti in the club. With GM backing how can they not?