Google and Fidelity just invested $1 billion [1] for 10% of SpaceX, putting its valuation at $10 billion, or twice that of Groupon, so I'm not sure where you're getting information that things like space exploration are less valued. It would probably be much higher, but at this point space travel is still very risky, so there's a high chance it won't pay off at all, compared to something technologically much easier to accomplish, like emailing people coupons.

Any one pharmaceutical company would be valued a couple of orders of magnitude higher than Groupon, let alone one that actually "defeated aging". Billions and billions are already invested in that. Pfizer for example, has a market cap over $200B. [2]

[1] http://www.nytimes.com/2015/01/21/technology/google-makes-1-...

[2] https://www.google.com/webhp?sourceid=chrome-instant&ion=1&e...