Arm's success in modern mobile chips, including Apple Silicon, is rooted in its original mission: designing low-power, low-heat CPUs for 1990s Personal Digital Assistants (PDAs) like the Palm Pilot. This early focus on battery efficiency created the architectural foundation for the smartphone revolution.

While Xbox chased mobile and cloud gaming, it completely ignored the rise of the PC handheld market, led by the Steam Deck. This was a major strategic blind spot, as these devices primarily play Windows games—an ecosystem Microsoft owns but failed to capitalize on, allowing competitors to dominate.

Despite dominating the market, early Microsoft operating systems like DOS and Windows were notoriously unstable. This was because the company's core DNA and talent were in compilers, not in fundamental OS principles like memory protection. Their products reflected this deep identity mismatch.

Unlike competitors focused on vertical integration, Microsoft's "hyperscaler" strategy prioritizes supporting a long tail of diverse customers and models. This makes a hyper-optimized in-house chip less urgent. Furthermore, their IP rights to OpenAI's hardware efforts provide them with access to cutting-edge designs without bearing all the development risk.

Contrary to the belief that new form factors like phones replace laptops, the reality is more nuanced. New devices cause specific tasks to move to the most appropriate platform. Laptops didn't die; they became better at complex tasks, while simpler jobs moved to phones. The same will happen with wearables and AI.

The legendary backward compatibility that locks enterprises into Windows is also its greatest weakness. This 'compatibility prison' prevents Microsoft from deprecating old APIs, making the OS inherently less secure, more fragile, and less power-efficient than Apple's, which ruthlessly purges legacy code for better performance.

Microsoft's aggressive mobile strategy was not primarily about competing with PlayStation, but a defensive move against irrelevance. It was driven by the fear that younger generations are abandoning consoles for mobile apps like TikTok and YouTube, and may never enter the console ecosystem at all.

Former Windows President Steven Sinofsky argues consumers unknowingly want PCs without legacy baggage like editable registries and system vulnerabilities. Microsoft's focus on running old apps on new ARM chips preserves problems that Apple solved, hindering the PC's evolution into a modern, sealed device.

Despite appearing to lose ground to competitors, Microsoft's 2023 pause in leasing new datacenter sites was a strategic move. It aimed to prevent over-investing in hardware that would soon be outdated, ensuring it could pivot to newer, more power-dense and efficient architectures.