The problem with free is that people get entitled. You can see some examples in this thread.
"Everybody likes free. But free can be dangerous, too. Today's show is about what happens when you take something that was free and you give it a price. That is a highly risky move. And the damage can be enormous."
https://www.npr.org/2020/01/08/794592539/episode-386-the-cos...
Todd McFarlane was on the Tim Ferriss podcast and he had a great line:
"If you offer people $5 worth of value and charge them $6, they are going to be mad.
If you offer them $9 worth of value for $9, they are going to think you are amazing."