Who has time!
Sometimes I think laggards are laggards because they're busy, and stopping and learning a new process or technology, frankly, takes time. Maybe the answer is some mandatory on-site training where people come into small groups (so they're not pretending to listen on a call but actually in email).
IMO, laggards get a bad rap sometimes. Fear and change resistance may be in play, but maybe they just do not perceive that the new tech is valuable enough to fall behind in order to take time to learn it.