The biggest benefit is, of course, no commute. Beyond that, few if any positives exist.
It might be okay if your employees could maintain the same level of productivity and innovation. However, I doubt that is happening (certainly not if my workplace is representative). I think a lot of people are doing other things when they are supposed to be working. It is too easy to slack off when no one is watching you. Ditto for meetings. Too easy to totally disengage. I’ve seen this over and over.
I also think that not interacting with other people F2F changes you in a bad way. You get more out of shape both mentally and physically.
I do interact with some people outside the job from time to time. And I have kept up my productivity, in fact so much, that my program director tried to renegotiate my contract to allow me to work remotely, along with one other team member in Pennsylvania, but the government disagreed. So I will find another job.
We aren’t all slackers in remote-land.
I've seen the reverse. The worst disengaging I used to experience was people in face-to-face meetings engaging with their smart phones instead of those in the meeting. The worst would do it right in the middle of their own narrative. Now with online meetings, that one-hour time waster can be trimmed to a 15 minute high-productivity meeting with everyone fully engaged.
We can also get the pros in the meetings instead of underlings who could only really play airmail back to their bosses instead.
I can't even begin to describe how incredibly straightforward and productive it has been to have people write things out due to remote work instead of the previous spluttering and unprepared statements in face-to-face meetings. It's like the whole group had to learn for the first time that words have meanings and they can't just chirp something and expect everyone else to fill in the blanks.