Game mechanics can change over time. And regardless of the game mechanics you can NEVER control how other players play the game. (Unless you send me a Kindle Fire.)
If you want to be able to harvest more spice, plant more spice trees.
That's why I went on a spice- (and egg-) planting spree in Chakra Phool a few days after the reset. I saw how the spice was getting choked out by the gas in a few places, and all the empty patches in the bogs, and had a light-bulb appear over my head. It started getting kinda hot up there, and I could smell a really horrible singe-y smell, so I got to it.