it's also a question of money it's not easy to bring results when you play against teams that are willing to spend a lot of money and sign the biggest players (they don't always manage to win) but still you play against 11 champions look at real or city and However, looking at Inter in the final they didn't play too badly so I would say that there is hope also for the Italians who are strong and are coming back
Yes you are absolutely right, unfortunately Italian teams do not have as much money as Real Madrid, Manchester city or Paris saint Germain. But having so much money to buy so many champions doesn't always give you the certainty of being able to win any competition, see PSG who spent an infinite amount of money and still haven't even won a Champions League, then Inter come to the finals with players taken on a zero parameter basis. Football unfortunately is unpredictable
What you say is true, but regarding Serie A team which cannot match the finances of big team from other leagues, this has never been problem because basically Serie A can always produce potential and great players.
Financial aspect can indeed influence the team to be able to have every great player easily, but it doesn't necessarily mean that the players can play very well and make big contribution, this is where Serie A excels.
They were able to bring in several young players at prices that were not that expensive but within few years these young players could have extraordinary playing skills, this is why Serie A has team that has been able to win important competitions such as the UCL several times.
Look at how Juventus, Inter Milan, AC Milan always show their mainstay players, in the past, these three teams were the best at developing players and making the players become list of great European players.