A long journey begins a new chapter. After Brent Simmons launched NetNewsWire in 2002, it was then sold to NewsGator in 2005, acquired by Black Pixel in 2011, and returned to Brent Simmons in 2018. That would be quite a journey for any app to make, but especially an indie app.
For an indie app to have this kind of journey it has to be something special, which NetNewsWire most definitely is. Many of us consider it the defining app from the golden age of Cocoa app development.