Possibility

NFTs are rarely being a passive income, but in near future, they'll be the best source of passive income.

But, How can it be possible?

for example, 

If a YouTuber had 100 videos in his channel and he minted them as NFTs, he shares the profit of the amount he earned through monetization to the owner of the videos.

Like,

you bought one NFT from him, if he earned $100 from that video he'll share the percentage of the amount you guys decided when you bought the NFT.