Finders work and make money by getting clients. The work can be done by them or by other people, but as long as they are the ones getting the clients they will be fine.
Why is it good to be a finder?
Lots of money. Your income potential is quite unlimited. If you can bring in a steady stream of business, you can make plenty of money even without being responsible for all of the nitty-gritty work.
Not as much writing/research. Especially if you work in a larger firm environment, other people can do the work you generate. You might not have to worry about it as much, because you'll be able to spend your time meeting people and generating business instead.
Why is it bad to be a finder?
You only make money if you're bringing it in. You're the only one responsible for your business, and if you aren't bringing the money in then you aren't going to be making the money for long.
It's a lot of work. You have to have connections and farm them to generate business. People need to know who you are, and they need to give you that revenue.