An argument can be made that the sameness repackaged differently is a result of market competition among small-scale suppliers rather than a result of ownership concentration and growth of the firms' size. Small guys often operate on a small profit and cannot afford much risk taking, therefore they go for the "proven quality". That results in many suppliers offering the same narrow assortment of goods that are easiest to sell - oftent the proverbial lowest common denominator.
Bigger companies have the luxury of the economies of scale, cross subsidizing between more and less profitable lines of products, and deep pockets which makes them to afford taking risks with new lines of product.
When freed from cut-throat competition, people can afford pursuing luxuries and other qualities instead of focusing exclusively on the bottom line.
Wojtek