Nobody watching is a very different issue to a 'lack of coverage'.
You can't properly watch any of the other sports with Sky TV.
You can't properly watch cycling without EuroSport.
If you have access to a decent amount of coverage of footy/rugby/tennis/cricket, then you have access to the coverage of more days of cycling than all of those other sports.
The fact that you clearly don't watch Eurosport doesn't mean it doesn't exist.