It is weird to rrad that pensions or benefits are paid by companies, not independent pension funds or the state. I have read enough news titles about companies

It is weird to rrad that pensions or benefits are paid by companies, not independent pension funds or the state. I have read enough news titles about companies in the US that have gone bankrupt and people have lost their pensions. The thought that someone works at one company their whole life abd gets their pension from there also seems archaic that