I love this paragraph, check their hypocrisy, switch Adobe/Apple:
[Apple]'s products are 100% proprietary. They are only available from [Apple], and [Apple] has sole authority as to their future enhancement, pricing, etc. While [Apple]'s products are widely available, this does not mean they are open, since they are controlled entirely by [Apple] and available only from [Apple]. By almost any definition, [Apple] is a closed system.