They can switch when their contract runs out if they wish. After thinking though, some of this Merc stuff may be coincidental. Merc, Aston, Williams, and McLaren are all running very compromised right now. Apparently raising the ride height to help with proposing adds a ton of drag, and Merc/AM/Williams are all having to do this AFAIK (Merc and AM with 100% certainty). McLaren’s issues are different, but it’s even possible that they just lack downforce anyway and that’s why they never had a porpoising issue. Also, porpoising occurs at higher speed, so utilizing that power may not mean anything if you are just going to have an unstable car. We will just have to wait to really see where the truth lies once the teams can get on top of their issues. The Ferrari does seem like it is the best PU, at least so far, but all PUs should be within probably 15-20 HP from some stuff I was reading. A lot of the traction on slow corners is how the power is deployed, not how much you have per se. Last note: The ICE components and fuel are already homologated. The hybrid component homologation date is later this year on September 1.