Kompany expects the top-level experience to prove hugely beneficial for the national side.
The 26-year-old said: "The reason we just about didn't qualify for the Euros - even though we had big talents in the team - was because there is still a difference between success or performing every week at the top and supposedly being able to play at the top.
"The step has been made now by many players - Vertonghen, Hazard, Dembele.
"There are so many players now that play at the top of the competition and that will add so much experience.
"At international level the teams that do well are the more disciplined and the more experienced. By definition our team was very young so it was very difficult."