TV & Streaming Access Questions re: England & Western Europe

I could google this to find my answer but it's more fun to do it this way I think --

Ok, so I'm assuming my premise for this post is still a thing that exists so please correct me if I'm wrong here or if things have changed recently.

Can one of you dudes living in England or one of the other main Western European soccer nations briefly explain why I've heard that in many cases it's easier to watch games in America than in the country these matches are being played? I understand situations like local blackouts for matches that don't sell out. It's lame, but we have that here and it's actually a useful tactic. That's not what I'm asking about here.

For example, if I live in London and want to watch the Manchester Derby or the Clasico, is it easily accessible on a TV channel or an internet stream like we have here? Is this still the case and if so, why? It makes no sense at all. Especially when you're talking about THE place where the best of everything in soccer exists. Best fans / players / coaches / all the mega clubs, etc. It's all there in Western Europe.

Also, what about availability of interleague viewing across the continent i.e. La Liga or Bundesliga games shown in England and vice versa. Is it easily accessible to watch those games in most places over there or no?

The TV or steaming access in America is unbelievable. I basically can watch or stream any domestic league or European match live from anywhere assuming I'm not in the middle of nowhere. I never have to miss a big game. It's pretty amazing.