Everybody wants the copy-and-paste templates. They want paint by numbers. But they also want big profits. They want scalable ad campaigns that don’t quickly burn out or take tons and tons of ad rotation. Sorry, you can’t have your cake and eat it too. (Sometimes you can for a while, but it will fade, I promise.)
This is an excerpt from a book talking about Facebook Ads. I get the big idea of this passage but don't understand what "They want paint by numbers" means.