Meta's price adjustments for the Quest VR units are a direct response to the significant rise in costs associated with building high-performance VR hardware, particularly due to the global surge in memory chip prices.
Both work with Linux's existing swapping mechanism. Swapping (called paging in Windows) is a way for the kernel to handle running low on available RAM. It chooses pages of memory that aren't in use right now and copies them to disk, then those blocks can be marked as free and reused for something else.