People are more favored Liverpool, Real Madrid, Manchester City and Barcelona but the reality is PSG and Inter Milan who managed to reach the final. PSG was not favored to be the champion but they were able to dismiss all assumptions and even set a record in the final with a big win. The big role under PSG's success cannot be separated from the role of Luis Enrique where he managed to take advantage of the transfer market to improve and they were so consistent that they achieved their dream of becoming UCL champions.
The very lucky player is of course Kvaratskhelia because he joined in the second half of the season where he immediately brought PSG to win 3 prestigious trophies. It was lucky for him and I think his selling value continues to increase. For next season if PSG can maintain their playing style maybe they will have no trouble reaching the final.
No, I don't think PSG has a big chance of qualifying for the final next season. There are not many teams that can play in consecutive finals in different seasons and as far as I know one of them is only Real Madrid. PSG are no longer favorites for next season's final and I tend to agree that the team that does not qualify for this season's final will actually go to next season's final.
It is very difficult to maintain a team's performance over many seasons. The main players will not always be available in all matches for various reasons. Injuries, international matches or suspensions may have an impact on the team's performance, so consistent performance is very difficult for whoever the coach is to maintain.
This is also true. As far as I know, in the modern era of football like now, there is only one team that can play in the champions league final in a row, even three times in a row, namely Real Madrid. Apart from Real Madrid, no team has been able to advance to the final in a row, and I also don't see PSG having the potential to advance to the final next season, especially since many teams are starting to improve to become better. There are many reasons, such as player injuries, player suspensions due to cards and so on.
Besides, we also know that chasing trophies is easier than defending a title. Indeed, PSG has experience in defending the title, even almost every season they dominate, but that is in the domestic league, but in the Champions League it will be difficult. So I am also not sure PSG will be able to enter the final next season.