As RRocket stated, there are different grades of hard plastic, which can make a big difference on the interior feel. Both my cars have 100% hard plastic interiors but one is better than the other.
04-06 Mazda3 is the prime example on how to make a 100% hard plastic interior look and feel good (I make the distinction because I think for 07-09 MY, Mazda used the same look, but cheaper plastic). The upper dash and upper door panels have a nice rubbery feel. After 5 years, I don't have any squeaks and rattles, winter or summer, and only minor scuffs on the bottom of the door panels. It was also cheaper in 2005 than the Civic or Corolla, while better equipped.
The Outlander, while the plastics are noticeably cheaper feeling it's still well put together.
Ford Fiesta, a $20K car in its higher, very well equipped trim will have soft touch materials. If the Euro-spec model I looked at is relevant, the interior quality will be well above anything else in the class. I don't know where Ford cut cost with Fiesta because the equipment level is high and the build quality is high as well. Most likely the labor cost and maybe product development (?). So again, it is doable.