Although they’re available you don’t need an extension or app. They have a website where you can view price history and set email alerts. It works great, I’m still getting price alerts I set up years ago.

Who’s they? A population of 300 million people? The USA is large and diverse, it can’t be simplied in the way you’re describing just like the EU couldn’t. Social media and meme propaganda doesn’t represent a country and it’s people.