[jankins]

I think you are making an assumption that seems common sense but might not actually hold: that cryptocurrency will fail if it is prone to fraud, speculation, theft, etc.

I think it's interesting that cryptocurrency has achieved its current level of success despite those things being widely known and publicized. Users accept the risk to gain the benefits of the platform.

[Retra]

It appears one of the benefits of the platform is the ability to easily commit fraud, speculations, theft, etc.

[jankins]

Yep :P that's definitely a benefit for a class of users, but it's not the benefit that all users are interested in, and all the other benefits are linked to those vulnerabilities. (in the current implementations anyway).