Big firms cater to everything that their rich clients want. If the CEO of Coca Cola wants a divorce, they are sure to handle it for them. Also, the little firm I used to work at shared an office suite with a solo practitioner who was considered one of the best family lawyers in the city. She made a TON of money. Make yourself the "best" and you will always get compensated accordingly.
Not necessarily. Most family law shops are smaller and specialized. There are a lot of great family lawyers who work as solo practitioners. I don't know of a single BIGLAW firm that does family law, because the malpractice insurance is WAY higher and for most of them the money coming in from that type of a practice isn't worth the huge jump in insurance premiums firmwide.
I'm wondering something... If BIGLAW can't afford the cost-benefit downside, how do solo practitioners swing it?