Are you suggesting that European countries regularly offer severances to all employees that exceed what is legally required? Can you provide a source?

I don’t know about Europe, but in e.g. Canada, employees are generally entitled to common law severance, which is significantly more than the statutory minimum severance. e.g. https://www.monkhouselaw.com/how-much-severance-pay-should-i...

Yes, anecdotally, no recent evidence, though expect to gather some in the next year or two.

The last time my company laid people off it have very generous severance packages, way above the legally required 1/3 months depending on duration of employment.