With productivity apps being cloud hosted (Office 365, Google Docs, Tableau, PowerBI, etc) and with source code and team management services being hosted (Github, Visual Studio Online, Gitlab, etc) huge percent of people's day to day work can seemingly happens without a VPN.

The largest notable exceptions seem to be internal file shares, and remote connections to machines that need to be behind a firewall.

I guess the overall point I have is that with the data files for both productivity and source code being stored cloud side, that VPNs become less and less necessary for a large % of workers.