The US government has been meddling since the day they declared independence from Britain.

There's really only 5 major players. In no particular order: the US, Russia, China, North Korea, and Israel. Other than those parties, it's just random unaffiliated groups who are looking for cheap laughs, profits, or simple chaos. There are a few other countries trying to get in the game, but not many. And they aren't remotely there yet.

Most of the west lets the US take the lead (and the US often lets Israel do the heavy lifting). Which is why only the US has seen its tools released to the public. Germany doesn't really care if the US is spying on it, that just means Germany has less work to do. It's not like the US is trying to screw Germany. It needs Germany. Desperately. Germany is the glue holding the EU together, and the EU gives the US legitimacy.

Have you never eavesdropped? There are a near infinite number of reasons to do it, and most of them aren't inherently malicious. In fact, it is even a method of communication so widely recognised that it appears in film. You want the other guy to know what you want, but you can't just straight up tell him, so you just happen to mention it a few times in places you think or know his spies are operating in, and you got the message across.

Doesn't work for industrial espionage. You might be able to equip your military with pilfered technology (depending on what it is and how widespread the full knowledge of it is), but the courts will rip you apart if you try and commercialise it. There's no real risk of a national security agency stealing your ideas in such a way that you can't profit from them anymore.