Private ownership of exotics is not something to be entered into casually for your sake and for the sake of the exotics. It is a long term commitment involving money, equipment, training, and significant changes in your lifestyle. You may have to move when laws change in your area. In short, you must be willing to make the exotic the center of your life. Some confiscated animals have been abused, others have not.
Some owners give up the animals freely, others insist on partial reimbursement.
Some rehabilitation sites keep some of these animals, but send most to sanctuaries. Also, like any other operation, they can't indefinitely spend more than they take in. Some just don't make it for various reasons. Education is the key to compassion with effectiveness. Animals that spend their lives serving man should not be discarded like so much surplus office furniture when they are no longer economically useful.