It could replace some of the tasks done by some lawyers, but there are more than enough other tasks they could still do in the field, that Bitcoin cannot replace.
You heard the joke about the man and the women, who got into heaven. They were old school friends and they had a long term love interest when they were still alive, but they never pulled the trigger to get
married.
When they got into heaven, they met each other again, and decided to get married. They asked one of the Angels to find them a priest, to seal the deal.
The Angel returned after a month and finally found them a priest to marry them. They lived the happy married life for 3 years, but things got weird and they decided to get divorced.
They found the same Angel, and asked him, if he could find them a lawyer, to finalize the divorce proceedings.
It's been 1000 years, and the Angel is still out looking for a Lawyer in heaven...
Forever is a long time, when you are in a unhappy marriage.