I used to get really upset with labs offering up the scans, but pitching the negatives. It just seemed so crass. Lately, though, I've been thinking about this in more practical terms. Even back before the digital era, people were always throwing out (losing) their negatives. The most important thing about photography has always been the final "viewed" image. In the old days, that "viewed" image was on photographic paper, and was stored in albums, shoe boxes, and sometimes framed on the wall. The original negatives were usually lost or misplaced after a year or two, since it isn't convenient to store the negatives with the final "viewed" image. Of course, there are always exceptions, when the photographer was especially dedicated, but that's probably the exception, not the rule.
In this day and age the final "viewed" image is almost certainly going to be on some screen, such as a phone or computer monitor (ala Photrio). Once you've got that final "viewed" image, there really isn't much reason to lament the loss of the intermediate components. After all, you can duplicate the final image an infinite number of times without losing anything. The negative has become superfluous if you've already got what you wanted from the scan.
All that being said, I don't really see the point in shooting film, if you're just going to scan it and show it on a screen. I suppose people are seeking something "different" by spending money needlessly.