Question 1: Zarf sez that his primary motivation is a desire for personal ownership and control. His present policy is being happy to personally oversee the porting effort to any other platform that people might want to see the IDE & compiler on.

It seems natural to you or me to express control over a project by keeping it open, letting a hacker-community sprout around it, and keeping yourself at the central gatekeeper, but Graham has no history of operating this way.

Question 2: Dunno. He's very smart and friendly and will listen to what you say, but I think he is also very self-confident in his own decisions. Zarf notes that all the previous Informs have also been not-quite-free.