The issue is how many places can afford that. Norway can afford what it does now in large part because of an enormous sovereign wealth fund that owns more than a percent of all publicly listed companies by market cap worldwide, on top of other assets. Despite that, Norway also has some of the higher tax levels.
Elsewhere even reaching Norwegian benefits levels would involve an extremely sharp tax rise or very significant priority changes.
Unless we find other means of driving up the fertility rate, it's not clear most places will stomach the financial adjustments it will take.
You can get that from the rich as the other person said but that kind of redistribution should be considered on it's own regardless of this matter.
What i'm advocating for is simply internal child related distribution. You don't take it from the states coffers. You for example simply carefully raise the taxes of the childless and lower the taxes of those with kids (probably not directly proportionally to the number of kids) in the process retaining your original government revenue.
You don't have to go overboard with it because realistically any effect drags drastically but you do slowly keep upping the difference in benefits untill you reach either replacement rate or something slightly below replacement in a way that doesn't constitute an outright crisis.
> Elsewhere even reaching Norwegian benefits levels would involve a very sharp tax rise or very significant priority changes.
The answer is wealth redistribution. The rich simply hoard too much for society to keep working.