No doubt they can play there. However at the top level I think you want players playing in roles that maximise their ability to make the difference. Especially as systems are not as well oiled at international level.Jude played #8 at BVB
Rice played #6 during the Euros (Phillips was the one with license to roam)
Giroud has been a world class international goal scorer (but not at club level) because he’s been asked to bring the ball down for Griezmann and get his head and foot on things in the box. Those are skills where he’s top top class.