I know that’s how it works, but what’s the chance that the steering wheel manufacturer can get zero chips and the audio manufacturer has no issues or visa versa. It seems like Ford has some control over it and are shifting it to the options they believe are least needed. Also, rather than say “50% of the trucks will have them”, we get zero trucks with them. It doesn’t make sense
its probably not even the steering wheel manufacturer can get 0, its probably the steering wheel manufacturer's control board supplier can get 80% of what they need across all their product lines but as a maker of electric heat control chips they supply half the automotive OEMs, home space heaters, electric baseboard thermostats, [insert whatever else has an electric heating element] and that supplier makes the call as to what they are going to produce.
I do think all of these shortages are evidence of a mediocre/bad supply chain and sourcing team but Ford is not the only one in this boat, other OEMs are still yanking options here and there. I think automakers did the "right thing" for shareholders in good times and consolidated their supplier bases, using volume to bid down per unit costs. But also sacrificed some protection against bad times through this "streamlining." Which also means they are on the short end of the stick as the least profitable customers of their suppliers when faced with shortages.