Early on, people are unconvinced by a nascent innovation, so are willing to pay less. As the network effect grows and the innovation becomes indispensable, they are willing to pay more.
Holding for greed or risk diversification isn't using in the classical use of the term using - it's using it to mitigate potential risk and/or to earn wealth if society is tricked into using this mechanism that unnecessarily transfers wealth from late adopters to earlier adopters.
Zerocarb has healed by IBS and dramatically improved my mental health (with counseling of course). I was never overweight, but lost a lot of weight anyways, have a much more fit look.