Value is a human construct, something only has value when people are willing to pay for it because they think it has value. The only thing that will increase the value of HIVE is people. The more people understand that websites (on blockchains) that are democratically run and owned are better for society than websites that are run and owned by a corporation, more people will use HIVE and the value will increase.

Not sure what the fair value is, currently I would guess anywhere between $2 and $10 is reasonable...