I can't remember where I heard this, but I was told that the death of logic languages occurred due to the poaching of the majority of good active researchers and developers by the big database companies.
Are you saying researchers belong to their university? Or are you saying once someone is a researcher they are no longer allowed to move to industry?
Also in my experience a lot of researchers are grad students, who move to industry on completion of their degree - does getting a job after graduating mean you were “poached”?