This remains the case to a large extent. This makes working with Apple and Microsoft in standards groups a bit challenging at times, since they won't actually comment on whether they're even thinking about implementing a standard, or whether they would be willing to implement it as written, until they suddenly ship it.

And if they're _not_ shipping it you have no way to tell whether that's because they never will because of some fundamental issue they perceive or whether they're basically fine with the idea bu just haven't gotten around to finding resources to implement yet.