In many European countries you have to file a ton of paperwork and justify it: ex. at Google, they're still working through _January 2023_ layoffs because you have to work with the government itself and there isn't a good* financial reason for it
* by European standards. "we need stonk to go up" doesn't fly if you're massively profitable
That's an internal choice they do, to avoid having a reputation of a company that fires people any second (but then you have companies like netflix which take pride in having that reputation, but make up for it by paying more).
However, it's very different from European companies where these processes are (often) driven by laws. In the US there are no employee protection laws (aside from protected classes) so even if the company has a rigorous internal process, they could at any second override it if someone high up says so and you'll be fired in the blink of an eye.
You get 70% of your salary (or 80% if you have children under 25) for two years, capped at 70% (or 80%) of 150k.
There are a lot more exceptions, special cases and so on, but that's the gist of it.
Here in Virginia, the max, regardless of how much you made, is $378/wk, for a max of 12 weeks.
You can't claim it if you're also receiving a severance, and you also have to record at least 4 job applications each week, but the documentation required needs to include information like the hiring manager's full contact information, which usually means the company needs to have replied to your application within that week.
I got laid off back at the end of April last year. I got a month of severance, so I couldn't claim UC in May. In June, I was able to do some online sleuthing to figure it out for a few applications out of the dozens I was making in a week, but there were some weeks I wasn't able to scrounge together even 4. I ended up with 2 UC checks for a total of $756 gross (yes, had to pay taxes on it). I don't remember exactly how much, but I do remember I calculated it was less than 20% my original take home pay for a month.
Luckily, by the end of June I had a good line on a job and started in July. I got lucky that we could bridge a month of basically "no" income from me. I can't imagine what it would be like for a single-income family living here in one of the most expensive areas of the country.
That's a big problem for US based tech companies
One of the reasons Google has long term big center in Zurich, if grass would be greener (since cheaper it is) in say Germany or Austria they would build there
I don't think Google has an office in Zurich because it's cheap. It's mostly due to a lot of talent available (ETHZ, EFPL, etc).