I feel like the storage requirements are really going to be these issue for these apps/services that run on "take screenshots and OCR them" functionality with LLMs. If you're using something like this a huge part of the value proposition is in the long term, but until something has a more efficient way to function, even a 1-year history is impractical for a lot of people.

For example, consider the classic situation of accidentally giving someone the same Christmas that you did a few years back. A sufficiently powerful personal LLM that 'remembers everything' could absolutely help with that (maybe even give you a nice table of the gifts you've purchased online, who they were for, and what categories of items would complement a previous gift), but only if it can practically store that memory for a multi-year time period.