I didn't even mention corporations, that was someone else. I was just making an observation that our standard of living and what we deem as essential possessions and such have changed considerably since the era of the space race. America isn't poorer than it was before, the funding could be had.. but I don't think most folks would want to make any sacrifices in order to free up money to fund truly large space programs.
Yes, if it was cheaper, it'd be more likely to happen. Also true that if there was revenue to be had either through tourism, mining, or who knows what.. that could also make it happen. Virgin and SpaceX might get there. Who knows.