In spite of all the valid criticism, we still got lucky that we ended up having this nonproprietary, decentralized, universally supported medium called email. A large number of businesses still (and will continue) to run on email, as does a certain subset of open source and other projects (using mailing lists).
> companies no longer send confidential info through it.
> companies no longer send confidential info through it.
It depends, B2B absolutely still do.