Senior partners in law firms also have specializations. That’s one of the ways how flat organizations self organize. People specializing in tax law aren’t in competition with people specializing in divorce etc. Further they can keep slicing the law into ever smaller specializations which ends up improving the firms reputation.
Aka go to a big firm and someone is more likely to specialize in exactly the issue you’re having.
It’s seems fairly similar, though considering few companies operate this way it’s hard to judge if it’s more or less likely to succeed.