[Biggirl]

Are you though about that?

It is pretty much established as of now. They even have a year round home in Las Vegas.

[humblegunner]

Are you though about that?

[Alberta's Child]

The year-round home in Las Vegas is very telling. They're in the entertainment capital of the U.S. where they have a market among the millions of visitors traveling there. Without the casinos there would be no reason to go there.

That's why Las Vegas is where faded old singers go at the end of their careers, too.

Of course, there's also the strong possibility that a circus show with human performers is more interesting to an audience simply because it's easier to train humans to do weird and entertaining things, too.