The same is true in the USA. And then, invariably, someone behind them will immediately change into the right lane and speed up to pass them on the right. Ther

The same is true in the USA. And then, invariably, someone behind them will immediately change into the right lane and speed up to pass them on the right. Thereby making it even harder for the person merging to get in, while also pinning the person who made room for them in the middle lane, because there's suddenly a bunch of faster-moving traffic in the right lane. It will tend to work out this way even when it's a 3-lane highway and the left-hand lane is wide open.