The 'value' can be as simple as a payout. If I could go back, I'd love to invest in Snapchat. I don't think Snapchat will ever have a strong revenue stream but that doesn't matter to me - what matters to me is the buyout.
Hell, I invest in options often. There's no real value to me... only a potential investment payout.
I think it's the same with most investors of technology.