If it’s easy/cheap to build 1-2 TB RAM systems, why are there so few I can rent from AWS? I settled for 768GB when I tried a few months ago and it wasn’t cheap

If it’s easy/cheap to build 1-2 TB RAM systems, why are there so few I can rent from AWS? I settled for 768GB when I tried a few months ago and it wasn’t cheap. They did have like one HANA class system that was multi-TB at even crazier prices but I was kind of disappointed when I went to do something like you suggest. It was also impossible to get a lot of RAM without overpaying for a lot of cores I didn’t need and couldn’t use. I don’t disagree with your point about the optimization benefits of just caching data but actually getting a cache optimized system is seemingly another thing entirely. My perception is that it’s been hard to get >768 GB systems for a bunch of years now. But I don’t follow this space closely,