Value in Use isn't "Market Value". It can be investment value, or on-going value. The term "Market Value" and "Value in Use" are pretty much mutually exclusive. Although the Value in Use can be construed as "Market Value" in properties so unique there is no real "market" for them - churches, public buildings, etc.
The best example I can give is an industrial building specificially designed to say, can evaporated milk - like Pet Milk or Carnation in a can. It would have specialized equipment and be designed to have a facility to receive the milk (reciever room), a test lab, cookers to cook the milk down and pasturize it, then to homogenize it, then to the canning room where it is canned, boxed, and labeled with 40 different brands or so [even if people argue that Pet Milk is better than IGA Milk - same stuff] and stored until shipped off.
Since canned milk is used less and less every year, such plants are obsolete. So what do you do? The plant has a value as is in use...and the assessor typically would appraise it that way. It has a value in use so long as the plant operates. But if the plant closes and the equipment is removed, its specialized construction makes the canning plant difficult to adapt to other uses. Therefore, its "market value" is quite low in comparision to its value in use.
On the other hand, a large free span building of say 40,000 SF might serve as a plastic bag plant, a storage facility, a small welding shop or electronic repair facility. Its market value is much more likely to be in unity with its "value in use" because it needs no modifications to be used for a wide variety of commercial / industrial applications.