no one but bitcoin miners and owners have an interest supporting it. anyone else has to live with the burden of electricity wasting and internet propaganda from it. so there will be constant opposition
the idea is that "owners" become a larger and larger group over time, as mass adoption takes over. after a certain point of market acceptance, the naysayers can't avoid it. just like they can't avoid the gold market. if it were purely up to governments, there would only be fiat money. instead, governments have gold reserves among other assets.
the jury is still out regarding mass adoption, though.

bitcoins popularity only existed because people wanted an open financial market.
isn't that proof enough that demand will continue to exist for bitcoin? what can provide open transparent p2p markets without third party/government intrusion, and do it better than bitcoin?