There are two really good insights offered in this post reviewing keyword research services.
1. Drop Servicing Opportunities: There are many opportunities to hire inexpensive workers on platforms like Fiverr and then resell their services at a higher price. One of the Upwork freelancers used a $10 Fiverr freelancer to deliver the $75 service. There are many arbitrage opportunities like that.
2. Fiverr and Upwork are great platforms to find opportunities. For example, Purecopy has sold 999 business tagline packages ranging from $30 to $90.
How about offering that service through a dedicated website focused on tagline related content so that you rank in search? How much more could you charge if you become an expert in landing page taglines?
3. Bonus Opportunity: There is demand for organizing all Fiverr and Upwork categories in a spreadsheet so others can find new startup ideas easily. Validated Ideas has recently done something similar for poorly executed apps. I’d be interested in this if one of you build it.