We haven't even entered the real "Space Age." Commoditization of space flight is an important step. Call it whatever you want, it might be frivolous for Bezos and Branson to be the ones going into space, but who cares? It's such a small aspect of what's going on behind the scenes, where we have several private companies pouring billions into research of space flight.
> But what he and Branson are doing has none of that R&D that defined the space age, where innovations in materials and technology found real-world applications and became everyday objects for common people.
Except that these companies absolutely are doing R&D. We don't know what sort of "real world applications" might come from it in the future. We do know that right now, it's extremely expensive and difficult to go into space for anyone. Hopefully in the future going into space will become more than an expensive hobby for billionaires, but you can't get there without investment into space exploration.
> All they're doing is spending millions of dollars doing something that has already been perfectly possible for over 70 years.
Yet we still haven't returned to the moon and haven't gone to Mars, or to an asteroid, or to really anything else in that time. Being able to do it and it become a thing that we do are two different things entirely. We can't rely solely on NASA for innovations in space flight, especially when its funding can be stripped and killed off on the whim of a President, like Obama's disastrously bad space policy did during his presidency.