There comes a time when the design space in a game system is used up, and people have the models they like.
I'm absolutely sure these games will continue fan-supported. IIRC, the 2nd edition X-Wing has been very popular among the grognards. At least my friends have focused on that instead of the newest version.
But the figurines might become hard to find. You can't simply 3d copy and print those, Lucasfilm is big enough to guard its IP.
-Zyg