It's not about hard-working or so much about originality it's about timeliness and popularity. Relatively few people will rush to read a novel just because it came out. Original novel writing will never be a good fit for Steem which gain it's value from ever changing trending page based on 7 day voting window. If on the other hand you are a known book author with a user-base and you publish your book chapters first on Steem or exclusively then I think the promotion initiative is worth rewarding relative to the amount and quality of viewership brought to the platform.

Want an other example:
If you manage to land a Steemit.com post to #1 rank of r/bitcoin or r/cryptocurrency , I'd vote your post to 80$ and will send you 500 SBD for the achievement.

Here: https://steemit.com/promo-steem/@transisto/bring-a-steemit-com-post-to-1-daily-rank-of-reddit-com-r-bitcoin-or-r-cryptocurency-and-earn-500-sbd-big-votes