Thanks for the question. The project started with privacy. The only way how to provide privacy for data is to do computing on-premise. But on-premise creates t

Thanks for the question. The project started with privacy. The only way how to provide privacy for data is to do computing on-premise. But on-premise creates the problem that when you run the binary file, it's a black box and the best way to prove security is to publish source code. Since everyone can see source code, it's on-premise and it's simple to compile, it creates the problem with piracy, so I made it free/full-featured/unlimited for non-commercial(consumers) use. Commercial companies don't steal software(probably, they are afraid of penalties), at least in developed countries, so that's the place where I make money. It also my sales funnel. Users start using SkyAlt at home for free and at some point, they realize It can solve some problems at work. Luckily, they are many use-cases in both markets(consumers and B2B). I thought about Perpetual Pricing(use it forever, but updates are for the first year only), but at least for first few years, there will be significant progress, so everyone should update. License converts code to GPL 5years after it has been published. Running 5years old version is a really bad idea(security, etc.). We will see how well this will work, I may change it in the future.