Nope. Wrong. At least in my opinion. And here's why I write for anthology calls and why I'll continue doing so.
You've probably heard before that anthologies are a great way to get your foot in the door with a publisher, to see how they edit, how they treat you, what their contract terms are like and how they promote a book under their care when everything is said and done. All that's true but its early game stuff or when you're thinking of giving another publisher a chance, which is never a bad thing. I'm with different publishers because each of them gives me something unique that only they can do and since I write every pairing and every heat level one publisher isn't going to do it for me despite the fact that I only write romance. So there is that aspect as well.
Anthology calls are also, in general, instant print releases. Right now I do one event every year which is the Denver Pride Fest. Likely I'll be doing more in the coming years but that is the one that I am all over and plan for months in advance and can't wait to get to. Its a two day fest of rainbows, glitter, friends, and sunshine. But I need print books there and so while I do have my novels that are in print, I like to flush out my space on the table with more print releases. That's where anthologies come in. 10,000 words is quick for me. I have an idea, I can keep it fairly simple, and then its done and turned in within a week. Poof. Instant print book that is all shiny and new to put on the table.
Anthologies are guaranteed money. The reality of writing is that sometimes books flop. They may not connect to readers or something else is happening that is out of your control and your book doesn't get enough attention to get back the time you spent on it in terms of dollars. It sucks but that's life. Most anthologies pay a flat fee which can be both good and bad for you. If its a new publisher that you're trying out then take the flat fee because you don't know how their sales are for you. If its someone you've worked with before then make the call yourself. Before I quit my job to write I was making $10 an hour so that's what I base my anthology payments on. If I spend two hours writing a 3,500 word short story and the payout is $35 that's pretty good. If I spend five hours writing a 10,000 word story and that payout is $200 that's even better. Additionally, when publishers offer guaranteed payments for anthologies they generally pay at the time of the contract or within 30 days of it. That completely eliminates the long waiting time for the book to come out, which can often be four to six months, then the quarter has to be over which is another month to three months, then forty-five days after that you'll see your first payment. That's typical for single releases and for anthologies that don't pay up front. It could mean more money for you down the line but it could also mean less and you're waiting close to a year to actually see that money.
Anthology calls can get you in the door with a genre, not just a publisher. Say you've always written gay romance and now you want to try writing young adult romance. Say you work with Dreamspinner Press already. Their young adult imprint, Harmony Ink, has an anthology call right now. Easy way to see what writing a young adult story is like without having to put in the effort or time for a novel. And, again, guaranteed money. Which is important when you're breaking into a genre you haven't been in before and aren't typically known for.
Doing anthologies also gets your name in there with other people. Even NYT bestselling authors still write for anthologies. Go to the local grocery store bookshelf if you don't believe me. Lori Foster has one out right now. And Patricia Briggs did one as well which is how she introduced two of my favorite characters. JR Ward did one too. Anthologies aren't for new authors, they're for everyone.Your name gets in front of other people who either picked up the anthology because one of their favorite authors was in it or because they liked the cover or just because they read the blurb and it stuck with them. The whole point is to get your name and your story in front of people in whatever way you can and anthologies do that beautifully.
So write for anthologies and use them wisely. The best way is to have something of your own out first in the genre that the anthology is in, preferably with the same publisher so that when they finish the anthology they can see what books you have also written and snap them up too. Make it the start to a series even. Or just a 20,000 word short novella. Something that has your name on it as a single release that the reader can go to because they liked the short story in the anthology that you wrote for.