Given the recent conversation of tech trading vs tech brokering. I was curious if there has been any consideration of "Tech Licensing"?
By this I mean that I can "trade" or "broker" a tech on a short-term basis - either just maintain an ability to revoke the use of a tech that's been licensed, or allow the use of a tech in exchange of a resource/money per tern, or otherwise place conditions upon a tech use, etc?
(Also, in this vein - with tech brokering, could the civ that the tech was originated from place conditions on a traded tech not to be brokered later).
Just to preemptively counter people who say that this can't happen because you can't make people un-learn something - there are many modern day and historical arrangements that do exactly this - either by lending expertise on, say, a manufacturing process or operational talent but withdrawing that expertise when the honeymoon ends (ie: you have this factory - but no one that knows how to run it) - or also, for example, by keeping some key step/process proprietary so that the entire process is effectively outsourced/traded but when the crates of widgets that can't be reverse engineered and are required to make the final product stop arriving at the factory, the entire line is dead in the water...
Also... this opens up an interesting aspect of espionage (for that future update), as stealing and/or reverse engineering licensed techs would be a compelling espionage avenue...