> literally anyone reading this, can stop using Google search on every device you own in the next 5 minutes
Yeah sure you can avoid typing google.com and think you just ghosted Google forever, but that won't end Google's relationship with you as it runs deeper than you know through its advertisement and tracking platform.
And what about services beyond search at this point?
Youtube, GMail, Google Calendar, GoogleFi, Maps, Play store (movies, apps), Photos, Drive.
I can try stop using those services immediately, but with a huge cost of data and connectivity loss (there's no easy email redirection, accounts are usually tied to emails). You'll also miss out on things that don't have a nice alternative and you are socially pulled into (green/blue messages in iMessage within the US or having WhatsApp abroad), can you stop clicking into links to documents, presentations and videos that people share?