Microsoft just never sorted out their exclusivity problem, tried to acquire their way to it, only to then be stymied by regulators, all the while having second-best hardware compared to the PS5.
If you're developing for the web and you're not testing you're site on real hardware, including a handful of iPhones and a handful of Android devices, your not actually testing your software.
You can't just check Chrome and assume everything else will exhibit the same behaviors. Standards exists, but so do bugs.