My guess is Google/Alphabet will do the same, as they have too high a proportion of people doing things that are neither basic research or contributing to revenue in any way. You can see how that can happen when you have an unconstrained gusher of money. There's effectively zero feedback. However given the weakness of their management (see: gusher of money + lack of focus) it's unlikely that the cuts will make any difference either way. Probably many good people will simply take a buy out and then go get another interesting job.
Netfix? Given their culture and their market problems one could imagine it, but their culture seems to have steered them into trying to fight back. So probably not a big wave, just some trimming, as they have already done.
As for the rest of maAMA-n? They appear to be doing fine; Amazon's retail challenges are more than made up by AWS. Apple and MS are trundling along as if nothing is happening in the macroenvironment (and they each have 40+ years to have worked out their systems).