So? That doesn’t absolve any of the former decision makers of their crimes. This is the kind of mentality that both enables and facilitates corporate criminals and corruption.

If you purchase a stolen car you don’t get to keep it if the crime is uncovered or the real owners are found. When you purchase a company you purchase its liabilities. If those liabilities/crimes were not disclosed, then you have a case for rescinding the purchase and prosecuting the former company/owners/investors for additional damages.