Ironic? Then you've missed the whole point of Monopoly legislation. Apple are not a Monopoly, so they don't have to play by the same rules Microsoft does. It's a huge legal distinction caused by their abuse of their monopoly position. Apple has to compete on their strengths, whereas, without these laws, Microsoft can compete purely on their monopoly position, forcing PC manufacturers to pre-install Windows, for instance.
Exchange support over IMAP. Until someone reverse-engineers the closed-source proprietary Exchange protocols, much like the Samba project, you're never going to get 100% exchange support without paying Microsoft, and Microsoft won't sell to someone that takes sales away from Windows Mobile devices without a court order.