The first study is call center employees which is really not relevant to most tech jobs for obvious reasons. In fact, call center employee jobs were being outsourced to people working from home in midwestern states over a decade ago (which shows why this study was able to be conducted in 2015). The second study is during COVID and doesn’t even address productivity.
Prodoscore - a company that does remote employee monitoring
Owl Labs - makes video conferencing devices
Ergotron - makes desks, workstations and monitor arms.