There are only 3 major companies in the drink market and lots of little companies with essentially no market share. In the carbobated soft drink market Coca-Cola, Pepsi and Keurig Dr Pepper had over 92% of the market in the US. General Mills, Post and Kellogg control the breakfast cereal market... almost 80% of that market between the three.
If a company gets any decent share, one of the big few buys it out. There's tons of brands but only a few actual companies.
Investigation shows scale of big food corporations’ market dominance and political power
www.theguardian.com
"The Guardian and Food and Water Watch investigation into 61 popular grocery items reveals that the top companies control an average of 64% of sales.
We found that for 85% of the groceries analysed, four firms or fewer controlled more than 40% of market share. It’s widely agreed that consumers, farmers, small food companies and the planet lose out if the top four firms control 40% or more of total sales.
Our investigation is based on the analysis of market share data from thousands of supermarkets across the US.
“It’s a system designed to funnel money into the hands of corporate shareholders and executives while exploiting farmers and workers and deceiving consumers about choice, abundance and efficiency,” said Amanda Starbuck, policy analyst at Food & Water Watch.
The consolidation runs deep: four firms or fewer controlled at least 50% of the market for 79% of the groceries. For almost a third of shopping items, the top firms controlled at least 75% of the market share."