Steal these data business ideas from Gumroad's top sellers

Gumroad has a post telling you what product categories are selling. It even gives you examples to specific products.

Some of these examples can be considered simple data businesses, even if they are not labelled as such.

This, for example, is a database of Saas landing pages that is selling for $29.

So, research these Gumroad products in detail. You might just find your data business idea sitting there for the taking.