What you're describing is real, and it's worth naming clearly for anyone reading this thread.
A listing agent's job includes helping a seller understand their negotiating position before offers arrive. That means reading demand signals, like multiple inquiries in the same month, and translating them into pricing strategy. "You have three people circling this property" is information that should change how a seller responds to the first offer that lands. If the agent in Jamestown knew that and still let her client take your number without a counter, she left her client's money on the table. If she did not know it, that's a different failure.
The comp problem you ran into in Fentress County is real too. Thin rural markets often have so few recent sales that automated tools become unreliable, and a local agent who actually works that county regularly would have a feel for demand that no database reflects. The information gap you felt was partly the sparsity of the data and partly the seller's agent not doing the job of synthesizing what she could observe directly.
The piece you may not have thought to ask: a good listing agent also manages the seller's psychology during the offer period. Helping someone hold steady, wait a day, or ask for a best-and-final when multiple inquiries exist is a skill separate from knowing the comps. The seller took your call because you were the one who showed up. A good agent on his side would have bought him the confidence to test whether showing up was enough, or whether you would have gone higher.
What's your read on whether the property was genuinely priced close to market, or did you come in knowing you had room?