Answer:
Products that have neither immediate appeal nor long-run benefits
Explanation:
A product represents a bundle of utilities created by a producer to satisfy a want.
A deficient product as the name suggests, would refer to such products which are deficient in attributes that represent a customer want and the ones which fail to satisfy customer wants.
Those products who do not conform to a particular quality standard or whose performance is below par as per customer expectations would be termed as deficient products.
Sometimes, organizations deliberately create deficient products so as to induce repurchase of subsequent products depicted as improvements over the previous ones.
Such products lack current appeal and are neither expected to accrue to long term benefits.