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I think that's what most people think. But from what I've learned from paid apps and SaaS businesses, you can earn more revenue from charging upfront than giving stuff away. Having a hard paywall and good sales copy gets the curiosity going and gets people to pay.
I need to find the tweet, but @andrewchen did a great thing on things that are consistently true that most people don't do. A few of those things are charging upfront, less design/more copy, and a few other gems.
