What cars could automakers have easily produced for massive profits?

Automakers aren't run by the sharpest tools in the shed. It's pretty obvious, considering some of the jarring decisions some companies make. It becomes painfully obvious when an automaker has a gap in its lineup that could have been easily filled with something profitable. What are some examples of cars you think specific automakers could make (or should have made) that could generate them massive amounts of money? For me, I think Cadillac should have offered a smaller version of the Escalade based on the Colorado/Canyon platform. The Escalade has been Cadillac's most successful model; it makes so much sense for them to offer a smaller, more affordable model. It won't have even been that hard, considering GM has all the parts easily available to them. Just look at how well received the Range Rover Sport has been since its launch, or how successful the GLE and GLS are. Sure, some may argue the XT6 filled that role, but it was too round and low to the ground for most Escalade shoppers to look twice at. Had it been based on the Colorado, I'm sure it would have sold well. The next car is a hybrid version of the Honda Pilot, Ridgeline, and Acura MDX. The writing has been on the wall for a while now; hybrid SUVs are extraordinarily popular. Yet, despite this, Honda seems happy to leave that segment to Toyota and now Hyundai. What are some other glaring missed opportunities automakers should have taken or should take?