This.
I’ve complained about this myself, and in particular about how damned near impossible it seems for me to interest an agent. I’ve had five books published, four of them by well-respected university presses. My list of published articles takes up five pages of very small type. I’ve been a contributing editor for over a decade. But I haven’t been able to interest an agent in any of my fiction or my non-fiction. I’ve been to meet-the-agent sessions. I’ve written scads of agent query letters. When I say “scads”, you should understand that I sent out more than 350 targeted letters to agents for my novel The Traveler. These were sent to agents who specialized in that form of literature – not just to 350 agents, or to 350 science fiction agents, but to ones who indicated interest in that particular niche. they were, they said, looking for that kind of book. Half of that number indicated their lack of interest by not responding at all. The other half declined, usually within two weeks, but sometimes as much as six months later.
Agents and publishers are strictly motivated by what they think will sell. There is no other criterion. A proven name – one that has produced books that have sold in the past – will be seriously looked at, even if only for that reason. Someone with what appears to be a salable series will be considered, because it implies future sales. People who have demonstrated the ability to be recognized, even in some other field (sports, politics, entertainment, people with web series, etc.), will be considered because their names are known, and that strongly suggests that their books will be bought.
All this can be extremely frustrating if you’re making that Sisyphean effort to get your book out there. Even if you’re published before (I already had two books out through Oxford University Press when I queried regarding Traveler), it won’t help if you’re not well known. I wrote my fourth book because I thought I had a Sure Thing publisher already lined up. It turned out that I didn’t – surprise! – sand I had to scramble to find someone to publish Lost Wonderland. I was lucky. I did fin one. Otherwise I’d have another completed-but-unpublished manuscript to add to my pile (yes, I have a pile of completed but unpublished books in my den, all looking for publishers)
You can look at the collected works of someone like Lionel Fanthorpe, with his 150+ published novels, all of them infinitely worse, I guarantee, than anything by Dan Brown, and despair. Or you can look at that stack of published crap and say to yourself “If he could do it, there’s nothing preventing me from doing it.”
Keep on plugging.
(If you have not yet encountered the wonder that is Fanthorpe – who wrote under many pseudonyms, by all means go here and read excerpts – https://www.peltorro.com/ His stuff makes Jim Theis’ The Eye of Argon appear to be Shakespeare by comparison. That is not a ridiculous statement. Fanthorpe sometimes seems to have used what I call the “Thesaurus method of writing”. If he needed to pad out a word count, he will suddenly throw in a list of adjectives for no good reason, as if he simply opened a thesaurus and simply wrote down the entire entry of synonyms. Not even Jim Theis would do anything as transparent as that. I’m serious.
And remember, even The Eye of Argon eventually found a publisher. But it was after it had attained recognition status. The Eye of Argon - Wikipedia)
PS – Fanthorpe is still around. And, Og help us, still writing. Garan of the Veneti was published just two years ago.