The comment you replied to didn't suggest any conspiracy. They merely suggested that board members on the boards of multiple organisations sometimes will do things that favour one of the companies but is detrimental to the others.

As for your "well known fact", I'm not convinced it's either well-known, nor necessarily a fact (I can buy it happens some places, but would question whether it's an inherent limitations or an issue with management in organisations who don't know how to handle remote work)