Well their players aren't as good as previous generations.
Gone from the best players playing at Barcelona, Real Madrid, Bayern Munich, peak Milan, to the tier below, Roma, Liverpool, Lazio etc.
Their top clubs are getting weaker and weaker.
They're falling behind the likes of Spain, Germany and Italy in tactical innovation, whereas before their coaches were influencing those leagues.
Still for the talent do have they should be doing better.
I suspect its just cyclical rather than a fall into permanent decline, like Scotland and Hungary.