Dart is not just "harder" (a difference in degree), it is different in kind: a new programming language with a garbage collector, not a 2D graphics API that's c

Dart is not just "harder" (a difference in degree), it is different in kind: a new programming language with a garbage collector, not a 2D graphics API that's close to one already available if not already in all browsers. Apple's origination doesn't alter this distinction between the nature of the two things, and Apple played fair once they contributed the work. Witholding patents when there was no WHATWG patent process or even a legal entity or membership structure was totally expected. The W3C has a patent protocol that Apple has used many times, and the w3c is where canvas has indeed landed as a Royalty-Free standard.