Losing value until the point of loss of sense is reached

One sees a falling loss of quality in many products that once became the favourites of the market and the consuming masses. It is certain that once the capacity of the markets to consume has been exhausted as a fuel for the rate of growth, the product becomes watered down.

It is worth to wonder whether the end of capitalism comes when the basic goods have lost value in terms of quality to the point where they are essentially selling pollutants and excrement, while the prices companies can “reasonably” charge on the market still make the usual profits.
Or will the consumer be pushed to consume beyond that point.

When people lose the sense and still consume what in effect continues to kill and stupefy them they become like zombies who to some extent still live out their past vocations to some minimal extent and in grotesque and pitiably comical ways. For example, when almost all food consumed is made of starches grown from GM corn and proteins gained from GM soy fed GM beef.

Or have we gone past that point of sense and lost it by now?