The definition of a trust has also changed. Before the '70s, a merger that would result in a single company owning, say, 20% of a market would be a red flag. No

The definition of a trust has also changed. Before the '70s, a merger that would result in a single company owning, say, 20% of a market would be a red flag. Nowadays, you have giants in any mature industry: it's the nature of capitalism. Since I like the idea of free market, I wish the market size of any company was limited to 15%, to truly allow competition and diversity of players. However, our economy is now global, and unless all the other countries play by these same rules (which I find highly unlikely), it will be a race converging to a few giant players and the occasional disrupters.