The thing is, from his innocent children's point of view (which they were born into this madness, so they were innocent), he had been working all that time.
He'd been scurrying back and forth hither and thither, travelling overseas and spinning yarns about antiques and rare coins. He'd been man about town, handling money investments, visiting banks, looking at properties, checking his rental mailboxes and his security deposit boxes, arranging lots of moving house, buying vehicles. Coming and going like quite the international businessman. Socialising, schmoozing, hanging out in street cafes smoking cigars, debating, discussing, considering all manner of intellectual matters and following share prices index in the newspaper every day or some type of phoney cover.
They may not have been minted like some of the other kids at school but sure as heck they didn't go hungry or want for shoes, need social housing, or live in an urban flat with no garden. I bet DdH played a Stepford Wife version of homemaker and housekeeper and provider.
I'll also bet there was plenty of times the mask slipped and he was a straight up violent abuser and they heard and saw unspeakable things and were subjected to flashes of extreme cruelty.
I was brought up like this by one of these people so I know what I'm talking about.
JMO MOO