3D TVs were a massive flop and tablets still feel like extra-large smartphones despite Apple's efforts to prop them up as laptop replacements. Meanwhile, even with huge technological advancements over the last decade, VR headsets remain relatively niche due to factors like high prices and a lack of compelling content. And although big names like Google, Microsoft, Meta and others continue to dump billions into AI development, the first wave of dedicated AI devices was an abject failure.