[morgante]

At least a socialized national system gives you flexibility of moving between employers without losing your benefits. It's arguably on par with individual retirement accounts and vastly superior to company-based retirement.

[something123]

However this eliminates a company's ability to retrain workers. Though maybe a modern company should anticipate high employee mobility

[morgante]

How does this eliminate a company's ability to retrain workers?

I'm not seeing the link between defined benefit company-sponsored retirement plans and retraining.