It doesn't seem like you can make much money as a brewmaster, but money isn't everything. If you could learn the trade, work for a bit, then open a brewery/brewpub you might be able to make some money... might.
When I came out to Oregon a year and a half ago, I shot a line out to the folks at Ninkasi looking for work. I received a reply saying that they were only a couple of guys working part-time and had no need. Now, Ninkasi is the 7 biggest brewery in the state (that's saying something for Oregon).