Meta spent $10 billion this year on VR, but they're a social media company, not a hardware manufacturer, so a lot of that was spent on things that Apple has already solved. Apple's annual R&D budget is $28 billion, and if the rumors of an impending headset are true, that means they've been working on it for years at this point. They've most likely outspent Meta by now, while having the advantage of decades of experience producing top tier hardware and operating systems, plus hundreds of hardware and software patents in their back pocket.