The cost to orbit drops being talked about are going to put space tourism solidly within reach of the middle class.
At that point the market becomes basically infinite: it'll be a standard rite of passage to see Earth from space, much like how people go to Disneyland.
It'll be like skydiving or visiting Everest basecamp or Antarctica.
Maybe soon you'll pop open the window on one of these new suborbital flights and skydive from the black back to Earth!
If it only costs $1 million to immigrate to Mars, you might be surprised how many people would give it a try and how many billionaires would sponsor whole colonies. Like when Europeans colonized North America.