alt Hacker NewsHey, developer of RPG Playground here, and I agree with you.
My platform has moderate success (multiple games released each day), but to compete with RPG Maker means being 10x better. I was hoping to grab some of that market, but marketing wise it's incredibly difficult.
Blender had moderate success when it was closed source, but not enough to pay its development, so it was going to die.
After its creator raised €100,000 to release it under the GPL, Blender became the leading open-source 3D tool it is today.
And they make enough money from recurring donations, service subscriptions, merchandise, conferences and trainings.