> As long as it's nearly impossible for another company to become market leader, there isn't competition there in any meaningful sense. Competition would mean t

> As long as it's nearly impossible for another company to become market leader, there isn't competition there in any meaningful sense. Competition would mean that Bing or DuckDuckGo or Baidu could reasonably overtake Google. That's taking things a bit too far. I'm not aware of any widespread legal or economic definition of "competition" that requires a reasonable chance for multiple firms to become the market leaders. I think that a market can be healthy and competitive even if there is one firm with a solid, say, 75% of the market and no imminent threat to its position as market leader.