They might spend $600 on 10 of those games, though. It's not all-or-nothing.

They might still spend $600 on 10 more games though. Or spend it on a subset of the games they pirated because they want to support the developer. Who knows.

If somebody spends $60 on a game but doesn't play it should they get automatic refund?

If the deal is providing entertainment for a price then why the publisher feels entitled to keeping the money if the entertainment didn't happen?

That's the basis of most of the Steam's business.