I bet those will last a bit. Honestly probably more durable than 80-90% of the skis on the market nowadays.
My roommate has a pair of 2011 Obsetheds, and they held up fairly well for a bit. They might need some tip/tail relam with some flexible epoxy like gflex if you beat them hard. If say that’s the biggest worry on those.
Kind of makes me wonder though about the threshold of how old equipment is before iit’s bound to fail. I saw a dude load the lift a couple years back in some old rear entry boots and saw them explode from getting caught under the chair a bit. I bet it’s around that 15-20 year mark on something really well made and lightly used.