Much as I would love working from home, I can't imagine that it would ever be considered a necessity - at least for the employee. I know of some employers who require that their employees work at home at least once a week to save on real estate. Of course, they provide the employees with the equipment, internet access and tech support to do so. If only I worked for one of them. . .
You don't have to be necessarily at home to fulfill expectations in your job. It's good to have an option to work from home when necessary. There are jobs that require an employee's presence in the office. There are remote jobs only (WFH). Does it make it a necessity? No.