So Dell offers 30 different choices in price/feature ranges, from lowest to highest. Apple only offers at most 3 - likely all in the more expensive range.
Kinda fits and confirms the "telling you want you want" mentioned above.
The other thing is that while Dell is stuck with Windows, Apple owns a few platforms. They sell cheap iPads as their entry product.
You may not like the strategy or the particulars of it at a given time (ie shipping a defective keyboard for years for inscrutable reasons), but they have a differentiated strategy because that’s what makes sense to them. They are not a commodity. Dell, HP, Lenovo can’t do that because they are merely a channel for delivering Windows - just like Exxon or BP are middlemen brokering gasoline, the only way to make more money is to ship more stuff.
But their ability to sell a full line of computing devices with so few SKUs is pretty amazing. Dell sells like 30 different laptops. Apple sells 3.