There are quite a few things that can be done.
1. Get management in on the importance of ergonomics in modern work-life. Like needs to be a large portion of budget and discussed with the board important.
2. Culturally teach the importance of ergonomics in computing. Make it a part of prereq college basic IT courses.
3. Interface types will change this equation. VR, wireless-VR, AR, advances in motion capture, and in brain-computer interfaces will offer alternatives that will have to be adapted and evolved into (I'm rooting for a foss future myself, as it will be more agile in the evolutionary process which is ony one of many reasons foss software is superior to proprietary.)
4. Change the outlook on the desk space and it's function. I was in really good shape in the Marine Corps but I still found time to play pc games, which all know can suck hours away, so I designed a workout program for at the desk in my barracks room. I turned what was a sedentary area into an active area just by changing my approach. For example, during CS matches, the rule was every death is max set of dips (using chair arms) squats (by pushing chair back out of the way) pushups, curls, or pullups, etc. Then rotate every time. I've also used balance balls as chairs in order to force me to focus on my core and ab static strength. There are many examples and each person is different, but the desk doesn't have to be a lazy place. (If you are interested in this I would start with horse stances to work with leg strength first and get the bloodflow to the gluteus maximus which is what excessive sitting restricts.)
Ultimately, I've been saying for a while that VR with room sensing seems really promising to me because I envision a future of VR workout sessions, which could be really fun by gamification and get people in shape! It wouldn't be that hard to ship a kettlebell with a motion tracker in it.
I have a game project (planned GPLclient/CC?contentbysub model) with a long goal of getting into that territory, but had to narrow scope away from recently. I'm mostly waiting for VR on gnu/linux to get better, hoping the Vive Pro has made progress in that area.