You owe the companies nothing. You especially don't owe them any courtesy. They have re-arranged the world to put themselves in front of you. They never asked for your permission, don't even start asking for theirs.
BanksySome people criticize me for using sources that are a bit low brow (this quote is from 'Gladiator') but you know what? 'I'm just going to use that hostility to make me stronger, not weaker' as Kelly Rowland said on the X Factor.
Banksy