This will not be easy for the team to let go some of their players as they really did great in their run to achieve the best ending. And, they have rookies who are proving worthy to be kept. Kuminga especially who might be their next key if they want a back to back championship. We know their weak point is the paint but with Kuminga gaining more experience they may patch that big hole that had been missing in the team. A backup player for Draymond and Looney.
I still do not know Warriors financial situation, but luxury tax, especially when it is a repeat thing, does make it hard for teams to continue. Considering they have plenty of players that are getting the max, it is going to be pretty difficult for them to get under.