What you are saying is we should adapt, mold, conform, comply the law, all the time, without thinking. Laws come from the past and these scenarios come from the future. Who would you rather please?
Your future you, who might end up away from home but still wants to watch the fight? So he sets up a stream he can access while on the train, for example. And he shares it with a friend on the next seat. And his brother, from outside the country, so they can discuss it together. Yes, this is broadcasting. Just because you can't set it up, you don't know how to do it without googling, or simply don't conceive it to be possible, don't limit the guy that finds out how.
Or would you rather please that guy that calls you and informs you that you should stop, because something as vague and as distant as "copyright law"? Sir, please stop. Your intent cannot be monetized further. Please wait a few years until we develop an app/device/system that allows you to view the stream remotely so we can charge you.
Fuck that guy.
If none of the scenarios resonate, then that's fine. But understand that people will want to do new things. Some will be deemed illegal, some will be acepted. Some can't be stopped.
Refusal to think about new scenarios dooms us to whatever was decided before we were born.
Enjoy your retro life.