If he actually did charge money someone else would've written an implementation of sudo to solve their own needs and avoid the overhead of transacting with a random developer.
If he actually did charge money someone else would've written an implementation of sudo to solve their own needs and avoid the overhead of transacting with a random developer.
And then "If he wanted money, he should have charged for his software" would apply to that someone.
And in such a system, before long, we have an ecosystem that resembles the venereal disease masequaraing as an addon store we see in wordpress.