Not at most companies; the legal implications of working from other countries mean that, unless you want to misrepresent yourself and create a fake "home" address, digital nomad lifestyles are explicitly forbidden.
I don't think you can "remotely" work for Apple without a work visa. If your paycheck comes from Apple US, and you don't have the right to work in America, that's a pretty clear violation of immigration law.
Tons of remote companies are US only, or even "one timezone in the US" only. Apple going remote doesn't mean the existing teams US teams would become international.
Not at most companies; the legal implications of working from other countries mean that, unless you want to misrepresent yourself and create a fake "home" address, digital nomad lifestyles are explicitly forbidden.