It''s only a 'sweetheart deal' iff they're paying substantially less than a court would force them to. Start by showing the workings where multinationals are breaking the law.
Since no one actually believes there's any law being broken we're left with moral outrage (and in the case of politicians there's precious little morality involved) but corporate entities don't really feel shame and shareholders are free to sue them if they act on it.
I'm morally outraged that yet again politicians would rather froth & foam about a broken system their predecessors created rather than actually fix their own mistakes. It's always someone else's responsibility when politicians and gov screw up.