Fun fact: if you want to develop #FreeSoftware for #macOS, #Apple has made it so difficult for your users to run it (they have to intentionally bypass several "security" systems) that you are basically forced to pay them $99 a year to "notarize" your code if you want your users to have a good experience and trust your app.
Does this actually improve the security of macOS? No.
Does it make Apple absolute mountains of cash? Yes.