in financial markets making wrong predictions reduces your capital and ability to make future bets.

in attention makets like social media making bold but wrong predictions has often the opposite effect. More following, engagement etc. 

is this something to be fixed or just a natural state of things?

IMO it's the natural state since those are 2 sides of the same narrative coin:

Success in financial markets: look past the narrative & see the underlying reality for what it actually is

Success in attention markets: synthesize & distill the core narrative from the underlying reality and discard the rest

interesting… so people shouting buy at the top or sell at the bottom just reflect the core narrative of the moment and are naturally rewarded?

Well it's not so much they're shouting "the" core narrative. More like they've crafted a compelling enough narrative to make you to do a particular thing, in this case buy or sell to enrich them.

Compelling because it draws enough from reality and reinforces your prejudices so that you're convinced by it.