If you can break into them, creating a blog in a competitive niche can be extremely rewarding. Competition is a sign of a healthy market – there is money being spent left and right and there are likely a ton of different products to promote.
However, where there is money there are savvy marketers and entrepreneurs looking to collect it. You’ll have a harder time breaking into a competitive niche, but it’s certainly possible. For those looking to build a long-term business, working in a competitive market such as health, wealth, or dating can be a great choice.