Not sure I would call it "hyper" specialized, but Matt Levine's Money Stuff newsletter is probably the best thing I read everyday.
I wouldn't try to replicate his style. Lots of people try, but it is like a virgin turning up to a BDSM orgy: you can't hang, don't try, find your own path.
EDIT: wow, that Dealbreaker story was over 10 years old...what have I done with my life.