There's a
trend toward switching from cloud providers to your own hardware, seems like it started around 2023 and is still a thing. This could be one possible reason for these price hikes: companies were selling their own hardware and switching to the cloud, hence the prices kept going down so rapidly in the recent years, but not anymore - cloud is losing its appeal to many businesses in the current market. And I think 3200 MHz memory is still plenty relevant for most production loads, it's not like you're looking for 2400 MHz memory from the Broadwell era, there are just not many good reasons to sell 3200 sticks at a good discount, especially those huge 128 GB sticks.