English to French Marketing Business/Commerce (general) market of product

CONTEXT:
"The manager sensed a *product gap* after discussing with his client."

From WIKIPEDIA:
"Product Gap:
The product gap, which could also be described as the segment or positioning gap, represents that part of the market from which the individual organization is excluded because of product or service characteristics. This may have come about because the market has been segmented and the organization does not have offerings in some segments, or it may be because the positioning of its offering effectively excludes it from certain groups of potential consumers, because there are competitive offerings much better placed in relation to these groups.

This segmentation may well be the result of deliberate policy. Segmentation and positioning are very powerful marketing techniques; but the trade-off, to be set against the improved focus, is that some parts of the market may effectively be put beyond reach. On the other hand, it may frequently be by default; the organization has not thought about its positioning, and has simply let its offerings drift to where they now are.

The product gap is probably the main element of the planning gap in which the organization can have a productive input; hence the emphasis on the importance of correct positioning."

Écart de produit? Lacune? Carence? Demande? Besoin en?

Merci!