You bring up a good point about the pet trade. Why are there so many animals seemingly "for the taking"? (the rationalization I hear most often is, "Well, they need a home!")
Because there is a demand! Because people desire these animals as pets, and until that is abolished, there will continue to be wild animals plucked from their homes in the wild
And the sad part is, indigenous peoples are being made to strip their very own homes and ecosystems of these beautiful animals. Their birds, their fish, their big cats, their primates. Why? Because it pays well.
The demand needs to stop, the exotic pet trade needs to stop.
Do you know what is one of the biggest reasons behind the decline of great apes (gorillas, chimps, orangutans) around the world? Ape mothers would die before they let anyone near their babies. And there have been documented cases in which entire gorilla groups have been slaughtered so that the infants can be sold on the pet market. For every ape baby sold on the pet market, more of it's kind had to die.
The same goes for the dangers of transport. Wild birds (which are
illegal, yet still in demand) frequently die in transit. So for every one bird that lives, many more died.
It's very sad
(I could go off on captive breeding too, but I'll spare you the rant