> I don't know how to respond to this point, it's a bit of a strawman.
Why is it a strawman? I can sell you software for $100 once or I can sell it to you for $10/month. I don't think anyone is suggesting that I'm gonna sell it for $10 once though.
In particular, Desert Ant is saying their software is free for 100k active devices per SDK. That's likely a lot more users than most peoples' side projects. Given that, I'm guessing that $50k (even annually) is not a crazy number (yes, obviously $50k is not what a consumer would ever pay).