Bespoke or fitted wardrobes are high-end furniture, to be sure. For what they provide, they are fairly affordable, and what they provide is every possible advantage: sturdiness, lasting aesthetic appeal, and room can all be married into one wardrobe, of a design that's tailored to the owner's needs.
That being said, a bespoke wardrobe is also a complex set of components, and to
ensure that its advantages are maximized (particularly the potential to make
use of all available space), a bespoke wardrobe should always be designed with
both the room and its own contour in mind.
This is a key disadvantage of bespoke wardrobes, at least in theory: a wardrobe
that is not soundly designed cannot be easily fixed, and some components of a
bespoke wardrobe are even more difficult to modify than others, although
repairs are generally easy if one is familiar with their original construction.
In general, a bespoke wardrobe is most feasible when it's installed properly,
to the specifications of a given room. A bespoke wardrobe is a semi-permanent
fixture of a room, and many of the most advanced bespoke wardrobe designs are
difficult for an individual builder to make. It's best to consider the
expertise of any wardrobe designer one might hire (or your own, if attempting
the project yourself) before doing it.