Off topic: I’ve never seen a flywheel analogy that actually understands what a flywheel is. People love to use it to describe a forever growing thing, when it’s actually just a buffer.
If we are talking about a flywheel as an energy storage, low friction is a key component of its ability to store energy as a buffer. If this was not the case, the flywheel would lose its energy quickly on its own and the buffer would be gone.
> People love to use it to describe a forever growing thing, when it’s actually just a buffer.
A thing has other characteristics other than its intended purpose. Your assumption that you need to use intended purpose for a successful analogy is false.
A quick online search returns mostly business related articles so I guess it's some corporate analogy.
I'd rather call it a positive feedback loop.