think of it this way - like all the other companies, he's maintained his own private fork of the open source osxfuse code. his happens to work on catalina, and

think of it this way - like all the other companies, he's maintained his own private fork of the open source osxfuse code. his happens to work on catalina, and he's telling those companies that if their forks do not, he's willing to sell them access to his code.