“it’s simply not my problem”

Yes it is

Both a lot of information, and not a lot of information travels through those cables.

It’s going to depend a lot on where you live.

If you’re in North America, the vast majority of the services and websites you access will be hosted on the continent and will continue working just fine. Webpages for European companies may become inaccessible.

If you’re in Australia, some local stuff will continue working, but a lot more things will die.

Services like Netflix almost always have local servers, it’s not financially reasonable to push that much video between continents on a per user basis. They just use those links to sync their various servers as new content is released.

Most phone calls to foreign countries will fail. Almost all of it passes through the internet cables these days, rather than using dedicated phone lines undersea.

Power efficiency will also matter for a home server to some extent. You don’t want a 300 watt idle power draw 24/7 just to handle streaming a video for yourself once a day.

Most home devices won’t use that at idle, but older PC’s, or larger setups could.

I’m going to point out, for the technologically illiterate, that GPS satellites do not in any way track people.

GPS satellites go “beep” and by listening to the timing of those “beeps” from different satellites, a GPS receiver on earth can determine it’s own location via triangulation. It’s a bit more complicated than that, but that’s the basic idea.

The only way you can be “tracked via gps” is if your GPS tracking device is also transmitting information using some other method (cell phone, radio signals, non-gps satellite connection, etc.)