On staff legal council is there to be able to make the call when a more expensive firm should be hired and brought in. There's a lot of BS lawsuits, however, that flow through. For example, every software company that gets big enough will likely get sued for some BS patent infringement. Having on staff legal will be able to make the call of "yeah, you should just give them $10k to go away". That's a lot cheaper than hiring a firm to come in and then tell you "Yeah, you should give them $10k to go away".

Particularly for a business, it takes years before any case gets close to going to trial. Plenty of time for your council to make the determination on when bigger guns should be brought in.