Controlling the corporations: remove the privilege of voting via lobbying.
Any corporation convicted of a felony should lose the right to "vote" via lobbying.
Felonious corporations should not lose their felony in any way, via merger nor acquisition.
If corporations want personhood, then they must suffer the same punishments for criminal behavior as a person.
Profit should never be sufficient grounds for murder, plunder, nor refusal to take responsibility for their actions. Externalizing their costs to preserve their profits is clearly not justified.