Google and Facebook are not cutting edge technologies. They are in the position of IBM in the 80s and Microsoft in the 90s, a legacy technology with huge market share being able to charge monopoly prices. A home grown alternative to google search is not beyond any university with a 100m budget.
I admit I hardly visit pirate sites, but I didn't even notice that happen. I just checked and the Pirate Bay is still available so I don't know what they're even blocking.
https://thepiratebay.org is working fine for me today, although I'm sure that address hadn't worked for a while until very recently, and it wasn't the same sort of blocking as those above.
I have a new computer. On my old one I changed to Google DNS when a lot of torrent sites were being blocked a few years ago, and suddenly they all worked again. Kind of silly saying access is blocked when changing one number on the computer unblocks them all.
While there’s some precedents with piracy website DNS entries removed from ISP dns, I doubt the gov would want to pick a fight with a multi billion (trillion?) dollar company who would actually fight back.