The worst corp I can think of is Nestlé, these pieces of shit have done a lot of environmental damage and have been known to engage or complicit in slavery.
Erasing Nestlé is like erasing the infectious boil on a human body.
What foul company would you erase for good and why?
All corporations are evil, but this one has a special place in my heart's hell. Blackstone's Invitation Homes robbed me of $3k and ruined my credit for years.
It's a shell corp they use to buy up all the residential housing in cities across the US, and with a nice name like Invitation Homes who would ever guess that they're a multinational conglomerate?
As long as you're not renting you should be fine other than the fact that corporate rentals, 'investment properties', and Airbnb have cannibalized the housing market. Good luck.