Just an observation -- I've been in commercial insurance for over 4 decades and had many clients move on or close their business -- sometimes retirement, sometimes burnout, sometimes money issues, and so on. There isn't always a buyer. One thing I've seen with boutique shops is that their love of their craft often means that they make far less from their business than outside investors are willing to accept -- "I've got $100K (or a $1 mil or $10 mil...) to put into a business, so what's my return, and how hard will I have to work for it?"
Not too hard to see that without the passion the original owner had, a hard look at just the numbers may not make sense to outsiders.