It is inevitable that the global consumer goods industry consolidates into a handful of large groups as has happened, and the outcome is lower prices to consumers.
CPG companies are distribution and marketing powerhouses. They rose with supermarkets and mass media. The rise of voice-based ordering, as well as shops like Amazon, fundamentally threatens their business model.
Not totally sold on that part.
Unless, of course, the market turns into a monopoly. But even in oligopoly markets (such as the cola/soda) there is still plenty of choice, especially around lower cost products and with the rise of white-label/home-brand products.
You can also look at how much the large ones are buying local new brands (such as Blue Bottle). Tastes change, and small local companies are a great way for the big ones to figure out which new products work.