Quantum Computing is still climbing the slope from TT to the Peak of Inflated Expectations. There is still little to no major hype, as its still in “R&D/testing” it is slow, it is expensive (Very) limited due to all the surrounding tech required to make it work like cooling, containment etc…
Compare this to AI.
AI is at and heading down from the Peak towards the Trough of Disillusionment. It was easy (relatively) to implement, easy to evolve as how nVidia did, simply throw more silicon at it. The Hype was easy to generate because even while totally misinformed, media and other people out there thought they could easily sell it. Even though most of what they claimed was turd, it sounded amazing and a game changer even in the early stages, and businesses lapped it up. Now they are feeling the pain, and seeing that there are still major hurdles to get past.
To be fair, X didn’t “miss the deadline”.
They never gave a shit in the first place.