Surely, given the size of the demand, it is beyond the authority of TSMC to pay up, even _if_ they wanted to?
I imagine governments and authorities with any sort of stake in what could possibly be done with such a sum of money (it's unlikely to be used for Good, right?) would have an oversized say in whether or not they are allowed to pay it?
Is there recent precedent for ransoms of this size being paid?
What kind of data could they actually have "stolen" that's worth TSMC paying up $70M, rather than just writing it off?