As I read more and more articles regarding studies or companies (usually startups) experimenting with four day work weeks I wonder when/if a large company would

As I read more and more articles regarding studies or companies (usually startups) experimenting with four day work weeks I wonder when/if a large company would ever move in that direction. It seems something a lot of people (not just developers) would be attracted to. Might be incredibly beneficial in attracting higher quality candidates - particularly for large enterprises not as "desirable" as places like Google, Apple, Twitter, etc.