Italian teams are not weak. However, they are not interested in spending a lot of money on squad formation. So even though the performance of Italian teams is stable, none of the Italian teams have a squad strong enough to win the Champions League title.
Inter Milan and Juventus are strong teams. And their management is rich enough. If these two clubs target the Champions League title and form squads, then these two teams will be able to dominate the Champions League. But they will not be interested in spending huge amounts to buy players. They will form a stable squad. But I don't think they will try to build a very strong squad.
they are strong teams, I absolutely agree with you on this but in my opinion they dont have enough turnover
to manage a demanding championship like the Italian one and also a demanding cup like the Champions League you have to have many players and many good players
it is not trivial in my opinion and above all you need money