I saw a documentary where the host had that Canadian bed mattress whale and when he didn't play for two days the host begged him to.
This may be different for whales ($50,000 wagers etc). It's old history that doesn't occur anymore. I don't completely know about Vegas but if it is like most of the other markets, I concur with MDawg here. I am aware that in some Indian casinos in California INDEPENDENT (as in, outside) hosts still get a % of their players' losses, but even this sort of thing for independent hosts stopped years ago in Vegas. The only thing that happens if a player doesn't play enough or flat out stops playing for long enough is that if the host is a top level one will simply drop the player to a different host or have the player assigned to no specific host at all. It might've been years and years ago, but these days at every Vegas casino I play at in house hosts are salaried and don't get a penny more or less if their players win or lose.