Most (all?) of the current jam band groups have followed in the footsteps of the GD and openly allow or encourage live taping, and many other artists and groups don’t act against it (i.e., allow it if it is subtle and not bothering other concertgoers). It is possible or even likely that seeing how important live taping was to the popularity of the GD other musical artists have decided to either encourage it or at least turn a blind eye.
Check out the live music archive at archive.org