This question was asked a few years ago (https://news.ycombinator.com/item?id=22858035) by committed, and I'm curious what it looks nowadays.
> How many people on hacker news are running successful online businesses on their own? What is your business and how did you get started?
> Defining successful as a profitable business which provides the majority of the owners income.
> Have any recent trends affected your business?
I mostly ran the websites in to the ground with my custom wannabe frameworks on $5 dollar VPS's and lost interest. 2021 I sold the remaining three income generating websites for just shy of 1mill US.
I started the projects with a second person but ended up buying out their interest and running solo. I consider it success because I managed to last over a decade making on avg $400,000/year gross with that business "umbrella".
Advertising and publishing changed and continues to change by leaps and bounds on a yearly schedule. A lot good a lot bad, but its the same business over the years.