Pentax - depends on the specific foam as well as general condition. Foam breakdown accelerates with humidity and moisture. Most of these open-cell cutout foams are urethane based. It happens to urethane pack and tent coatings as well, over time. But those betray breakdown with a distinct urea (piss) odor, plus excess stickiness.
For long-standing transport case brands like Halliburton and Pelican, you can buy replacement foam if your old foam padding starts deteriorating. Or you could devise a different fashion of dividers and cushioning, including much lighter weight but less durable bubble wrap. But like Matt already pointed out, these are meant for transport, not long-term storage.
Amber is a bit expensive. I once saw a museum piece end table from the Luis XIV's palace, coated with many layers of pulverized amber dissolved in poppyseed oil, then "French-polished" like shellac, layer after layer. It was the most remarkable varnish I've even seen, and still free of any cracks or hazing. I did a little math, and figured out that if it had been made "today", the varnish would cost over $200,000 per gallon. That was 30 years ago, when coating ingredients were about a third the price of today.
If no foam then no problem would be my conclusion based on what I have gleaned from the replies. However don't the dividers in the third picture contain foam or is the cushioning material composed of something different?