Indeed. Microsoft broke with standards, and introduced the non-standard IXMLHTTPRequest API for their browsers. It later became a standard, but it certainly wasn't when it first happened.
Major innovation doesn't come from standards bodies, it comes from operational implementation and later opening up the implementations for standardisation. Unfortunately, Apple has not demonstrated a lot of interest in the latter part in technologies where it would be really really nice for end users (FaceTime, iMessage), but has in other areas that may benefit developers (Swift).