There is a Youtuber, Paul Lane who was advertising and interviewing Bethelites regarding this past Friday's streamed event discussing the 20 year old case between Watchtower vs Stratton. Robert Hendriks is one Bethelite interviewed.
https://www.youtube.com/watch?v=R0i5L8TP7lc&t=1475s
At a guess it looks like the Legal Learning Studio was established for providing CLE credit (Continued Learning Credits) for attorneys in the USA.
It had made this past event regarding the Watchtower vs Stratton available to all attorneys and went to the effort of getting it accredited for use as CLE credits in various States.
It may be costly for the JW Attorneys to obtain their required CLE credits and this may be an effort to save costs as well as keeping them Watchtower focused.
If they provide it free to 'worldly' attorneys they would probably consider it as part of their preaching work.
There is an indication on the website that the Watchtower is planning future events but none are listed yet.