City and PSG never won a CL either, but they are considered a top team in your books.
Luck is always a part of this game. Even the 2010 Inter got it along the way to win the treble at the end. There was the Walter Samuel-Salomon Kalou incident at the first leg of the match against Chelsea which is considered a penalty and a red card by the books, but we escaped it. Diego Milito's goal against Barca was offside too, but the goal stood. We were lucky to escape those incidents and won the whole thing at the end, but saying it's all been a lucky run in that season or this season is nonsensical.
Well, they are teams that compete fairly consistently at quite a high level over the last decade or so. They have expensive, high quality (ish- in the case of PSG) teams, the financial muscle to attract any player in the world basically, and some of the world's best players. Arguably some of their individual players are worth more than our inter starting eleven. City have smashed records in the Premiership and can pretty much field two whole XIs that are quite strong/capable/class.
I think getting a couple of decisions go against/for you is a little different when you're playing vs top teams compared to not drawing a top team in your entire run to the final.
On the other hand, this is the first time Napoli ever even mad the quarter finals in the CL. They've got two (?) very high end players right now, but there's a reasonable chance at least one of them will move to a bigger club. Very few people leave City/PSG/Real Madrid/etc for a bigger club, because pretty simply there aren't many bigger clubs.
One of the best players at Benfica is a guy who was given a golden handshake to leave Inter. Our best defense right now includes a guy who was released by the shitty cousins of City, and a 35 year old from Lazio. There are probably players at City, PSG, Barca, Bayern, etc, who make more in a week than what 6 of our starting 11 vs Milan cost (all bosmans).
Dont get me wrong, that's also a testimony to Marotta and Inzaghi, but at the same time, I don't really see how one can argue Inter, Milan, Napoli, etc, are in the same tier of club as something like, but not necessarily, {PSG, Bayern, Real, Barca, City, Liverpool} - obviously some of those teams underperformed this season, but overall that group has produced most of the finalists, and most of the winners, in the last decade.
Italy as a whole did well to succeed in the group stages, but got quite lucky in the knock out draws this year. I dont think I'm being harsh or anything, its just a realistic view; in some ways, it was Italy's turn to get some luck after having been screwed a few times, but still.