Before the taxes, coorps werent allowed to cross the border at all, now they may for a small tax.
Its not as good as opening the trade totaly again, but its a start.
So coorp trader can use some of the good runs again.
And if there are RM pilots around and take a 200.000 Tax from you, it also means there wont be any pirates in the same system, takeing 2.000.000 Ransom from you.