it's because tech people - like any employee who doesn't have to bear professional liability - can be pushed around easily (because who cares if the suits are occasionally blaming IT, who cares if the company fails, the pay is good, there are other jobs, etc.)

also from the perspective of the aforementioned suits, they can hire IT guys easily, who cares if one of them gets very uppity and quits if we blame them for everything/anything.