Probably because women no longer have to dress to impress men so much of the time. It's not that such things are unavailable, it's just that women buy other clothes now. And of course styles change with time an place.
Why not pine for crinolines? I found one of those on Finn.no
https://www.finn.no/recommerce/forsale/item/383288385
https://www.finn.no/recommerce/forsale/item/347819701