Thanks, you should try it some time.
I had a situation once where an old guy merged 2 lanes over and didn't hear my wimpy horn. If I would have slowed to 10 kph, I would have been sandwiched between him and the oncoming traffic. Instead, I accelerated, and got myself out of there. I hooked his front bumper inside the wheel well with my passenger peg & pulled it off (yeah he was that close and still coming over). I stayed upright, he lost his front bumper & grill. Your throttle is your friend, don't be afraid to use it.
If you want to be a sheep out there, that's your business. I actually find it safer to take control of the situation as best you can. Why do you think they teach lane positioning, if not to assert your right to be in that lane and discourage others to merge into it.