As products age they tend to use more memory. Add in space/time tradeoffs asking to use more. You either get stuck applying the brakes trying to keep the memory creep at bay, or you give in and jump to 2x the memory pool which will disappear too.
The old solution in on-prem was to populate machines with 2/3 to 3/4 of their max addressable memory and push back on the expensive upgrade as long as possible, or at least until memory prices came down for the most expensive modules. Then faster hard drives or new boxes are the next step.
