To the everyday
There's a memorable passage from the movie Apollo 13, when the astronauts' broadcast for TV audiences (before the service module explosion) wasn't even aired over the major networks because it was perceived the public was getting bored by moon flights.
Think about it: For many, the most exciting part about a trip to DisneyWorld or DisneyLand is the roller coaster rides -- without a thought to the incredible advances in aviation technology that get them to Orlando or Anaheim in the first place. What was unimaginable 100 years ago -- transporting millions of people everyday around the globe at altitudes of 35,000 feet -- is just routine today.
Hopefully, space travel will seem just as ho-hum and routine. And in the process, investors will not be scared off by the riskiness of something exotic, no more than they are scared off by the risks of commercial aviation.