The Euro (Cup) is in 2 years, 2020... not that long of a wait. So, we really have a major tournament every 2 years.
Most people will say the World Cup is more prestigious, it probably is but the Euro is a "major trophy" as well. Also, the more and more, Europe wins the World Cup, the better the Euro Cup looks. I don't know when South America will bounce back. So the Euro is a lot like the World Cup, sometimes, imho, the quality of play is even better. The World Cup really needed that VAR because at times, the World Cup, all the same was farcical, some calls were so bad.
I know, it's difficult for any team to reach that summit but not quite make the top.