Microsoft analyzed its remote workforce. Some interesting data:
- Sr managers spending 8 hours more per week in meetings
- Employees working 4 hours more per week
- Working 52% more at night
- More work on weekends https://hbr.org/2020/07/microsoft-analyzed-data-on-its-newly-remote-workforce

Good WSJ article on perils of WFH:
- Fewer informal conversations/social interaction
- Less mentoring/development for young employees
- Less team cohesion especially for new employees
- Lower productivity for team-based work/unstructured problem solving https://www.wsj.com/articles/companies-start-to-think-remote-work-isnt-so-great-after-all-11595603397

WFH is probably like long-distance relationships. It works for good organizations with strong cultures but it makes the bad ones even worse. I'd guess in the next few months, we will see more companies delay product deadlines and blame lower WFH productivity.