Sure Siri was revolutionary, but Apple blew it and allowed Amazon Alexa to gain a strong foothold. Apple also pioneered desktop windowing, but Microsoft overtook that position.
Apple is so arrogant they are incapable of true self reflection. They have become an arrogant, self absorbed, bloated company more focused on rapid emojis releases and rushing new products/software out the door versus hunkering down and fixing defects in their existing software.
Another example ... IOS 11 Bluetooth connection reliability is HORRIBLE compared to IOS 10.3.3. A recent call to BMW's help desk revealed that the entire BMW hotline staff are disgusted with IOS 11. One person told me that for the past 4 months, IOS 11 has been the bane of his existence. BMW went on to say that since the IOS 11 release, they have received thousands of complaints about IOS 11's horrible Bluetooth connection reliability. And because Apple is so ARROGANT, they will not allow users to downgrade back to IOS 10.3.3 until the IOS 11 problems are resolved.
This is what Apple has become and the Siri debacle is just another example. At some point, these issues will catch up with Apple, but for now, nobody really complains because Apple is making billions in profit.