Microsoft just did whatever they wanted with the web "platform", and so will Google.
In Microsoft's case what they wanted was nothing. They weren't a web business, saw it as a threat to their platform leverage, and so just left it abandoned and stagnant for years.
Google is simultaneously better and worse: they won't leave it stagnant because the web is their platform, but on the other hand they have a lot more to gain by abusing control of it.
Safari definitely does not just follow suit (see https://caniuse.com/?compare=chrome+102,safari+15.5&compareC... for example).
Many of those features can be used to comprehensively fingerprint your device allowing advertisers to track you across sites even without cookies. Forget about any laws or privacy efforts it would all be moot. And many of us value privacy far too much.
Apple even implemented the "do not track" API and advertisers completely ignored it.