It’s clearly decentralized as you cited multiple providers in your own post. These providers share no common (logical) servers. Would Apple go totally out of bu

It’s clearly decentralized as you cited multiple providers in your own post. These providers share no common (logical) servers. Would Apple go totally out of business every people that didn’t relied on this provider would be totally unaffected. If you own your domain and only delegate to a provider it’s almost seamless to switch to another. (Admittedly it’s more frequent for businesses than for individuals). This is a totally different story for Facebook.