I had a company called Michigan Insurance for years. Had my business and personal insurance with them, everything. Once I stopped being self-employed and no longer needed the commercial liability, commercial auto, and workers comp policies they were no longer competitive with my home and personal auto.
My independent agent shopped around and I ended up with all my personal policies at AAA (in about 2011-2012). I couldn't believe AAA was the lease expensive for comparable coverage, but they were by far. My longtime independent agent, who has had all my business for 30+ years stopped carrying AAA about nine months ago, so I technically have no active policies with him. I had a lot of guilt for years even considering shopping around for a different agent, but now that he kind of technically pushed me away by discontinuing his affiliation with AAA, I can and should find the time to do some comparison shopping myself.