Organized sedition, maybe, but "treason" is narrowly defined in the US constitution:
>Treason against the United States, shall consist only in levying War against them, or in adhering to their Enemies, giving them Aid and Comfort. No Person shall be convicted of Treason unless on the Testimony of two Witnesses to the same overt Act, or on Confession in open Court.
>The Congress shall have Power to declare the Punishment of Treason, but no Attainder of Treason shall work Corruption of Blood¹, or Forfeiture except during the Life of the Person attainted.
¹: "Corruption of blood" is a legal term. This passage means that treason charges cannot be carried to future generations, they only apply to the person who committed the act.
Regulatory capture is not a problem that can be solved by executing examples, because the captured officials usually don't even think of themselves as captured. The solution is to align incentives, for example by closing the revolving door
