There is a fairly clear line between constructive criticism, and destructive criticism. The result of feedback and criticism can often encourage a very positive change in a company's market behavior - or it might signal the time is good for a fundamental shift in product lines or business strategies.
Whatever the intent, positive or constructive feedback will normally promote goodwill, and strong bond between parties, and usually results in a condition that is better than prior to the feedback.
The San Diego Software Industry Council (SDSIC) hosted "Bulls Eye Night" on Tuesday evening. The venue is in a very nice corporate board room, with the following players: