I can see myself having a subscription just to have Tour de France running in the background while I'm working, had I thought about it and if I had an extra monitor or TV in the office.
I think it has to do with the cost of the various right for different events in each country, and purchasing power. It's really an area where the EU has absolutely failed, licensing of content should be union wide, but in reality it's still country by country. That might be a good thing, because €135 is a hell of a lot more in Hungary, compared to Denmark.
Don't get me wrong, 999DKK is actually a pretty good deal. I'm not into sports in general, I only watch Tour de France, rowing and a few winter sports, but 999DKK is actually within what I'd pay for that.
It doesn't look like you can get Eurosport as a standalone subscription.