Early adopters know the risks, but they also know they have to anticipate market standards if they want to stay ahead of the game. Security is different. Banks can't afford to open their doors online in the hope that one day someone will invent the internet equivalent of the lock and the safe. Trading exchanges can't offer to process business transactions for their customers without also giving absolute guarantees that their networks are secure. The same holds true for any organisation handling customers' money or financial details.
Security has to work first time, every time.
No wonder IT vendors are not much good at it. When vendors say they can solve security problems, they had better mean it.