[whywhywhy5]

You can't for incompetence, but you sure as hell can for fraud.

[colinbartlett]

Incompetence that borders on negligence can certainly be prosecuted.

[seanmcdirmid]

Negligence that leads to bodily harm, ya; but negligence that leads to monetary losses is probably a civil rather than criminal matter. It depends on the jurisdiction for sure, some developing world countries might see it as criminal.