Or stop buying stuff that is broken-by-design in the first place.

Apple is old enough that you need only block 17./8: they have a class A(!).

They already are fronting much of their stuff via Akamai, so good luck doing that...

Do you think you are going to win the war against "your own" hardware?

Until they front it via cloudflare or aws. I got hit by AWS blocking when setting up a network in Russia for the 2018 World Cup - my unifi controller was on an ec2 instance that was blocked due to telegram shenanigans. Worked around the problem but shows that blocking an AS can lead towards an unusable computer.