even our fancy barristers here in the UK can easily earn less than minimum wage, especially if they are acting as public prosecutors or defenders.
their average earnings sounds like a lot of money until you realise that:

1. it's skewed by the top earners
2. almost all of them are self employed
3. they have student loans to pay back
4. a court case can take a shitload of work, and they aren't usually paid by the hour

but you look at their fancy wigs and silks and you would think they were loaded