Which risks?
Mega corps have access to guaranteed bailout by governments as they're considered National Security concern, plus massive lobbying departments to buy all the laws they need to favor themselves over most potential competitors both external and internal, plus massive legal departments with experts at twisting the laws they didn't manage to buy yet into meaning whatever they want them to mean.
And after all that socialism-for-the-rich, any remaining risk is transferred directly to their employees in the form of lay offs, coupled with non-compete clauses that forbid the most competent, for months to years, from working at their core area of expertize, plus arbitration clauses that forbid them from seeking relief at the actual courts. Clauses that are enforced by the courts due to the aforementioned lobbying and purchased laws.